Solo 451 Mist Blower


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4 out of 5 stars Rating: 4

24 Reviews | 40 Q&A


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Solo 451 Mist Blower mist blower (backpack) $629.99
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Solo 451 Mist Blower

The Solo 451 is brand new and replaces the older Solo 450 model.

This motorized mist blower features a 2-cycle, 66.5cc, 4.3HP low-emission Solo engine and fan system. Also featured on the Solo 451 is an ergonomic carrying frame and quick-release straps. The polyethylene tank with UV inhibitors has a capacity of 3.4 gallons. A 4-position liquid dosage control permits you to have a selectable output from 0.12 to 0.89 GPM.

You can use this mist blower in nurseries, orchards, vineyards, your home, or for mosquito control.

  • Equipped with 2-cycle, 66.5cc, 4.3HP Solo engine and fan system
  • Ergonomic carrying frame and quick-release padded straps
  • 3.4 gallon tank capacity
  • 4-position liquid dosage control allows selectable output from 0.12 to 0.89 GPM
  • Misting range is 40' horizontal and 35' vertical for hard-to-reach spraying areas


Product Documents

How to Assemble the Solo 451 Backpack Mist Blower:

How to Use the Solo 451 Backpack Mist Blower:

The main difference between the old 450 and the newer 451 model is the larger motor, the Solo 451 has a 66.5cc motor instead of the 53cc on the older 450.

Replacement parts that are available:

Solo Screw (#0018421)

Solo Screw M5X20 (#0018363)

Solo Ignition Coil Complete (#2300204)

Solo Exhaust Gasket (#2061103)

Solo Muffler (#2500739)


Rating Snapshot

5 stars   12
4 stars   7
3 stars   1
2 stars   1
1 star   3

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Average Customer Rating
4 out of 5 stars (24)

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Most Helpful Customer Reviews
  • 42 of 44 people found this review helpful:

    3 of 5 stars  Compared to Sthil SR-450...
    By Patrick in Richmond, VA on 09/19/2012
    Verified Purchase

    I have used Solo and Sthil mistblowers for years in the pest control industry. For many years I leaned towards Sthil and the SR-420, but when the Sthil SR-450 hit the market and showed many major flaws (regular leaks, exhaust clogging) I begon to explore other options. I tried many other brands, before revisiting Solo and trying out this newer model. I would say that my biggest setback is the high price, although this website offered a killer deal. Even this price is $100 more expensive than the Sthil SR-450. That said, the Solo has never broken down on me. It runs a little rich, its a little louder than many others, but overall its a great unit if you are looking for an alternative to Sthil.

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  • 41 of 42 people found this review helpful:

    5 of 5 stars  Solo 451 Mosquito Fogger/Mist blower
    By Steve in Dowagiac, Michigan on 04/17/2012
    Verified Purchase

    Awesome machine!! Well worth the money if you live in an area where mosquitos make enjoying the pool or hot tub in the evening impossible. Last year I paid a major Pest Control company $100.00 a month to fog my property to control the mosquitos, it worked great but we were at the mercy of a company who was not prompt, missed appointments or rain delays = Mosquito re-infestation forcing us inside the house. I am now in control of my pest control thanks to, I purchaced a gallon of Talstar P concentrate to go with my new Blower/Mister and it appears to work wonderfully, I sprayed my yard 2 weeks ago and have not seen 1 mosquito since, that is saying something considering I live 1 block from a large lake in Southwest Michigan. I highly recommend the Solo 451 Blower and Talstar P insecticide, I received my order quickly, I highly recommend ordering from, I will definitely be a repeat customer.

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  • 25 of 27 people found this review helpful:

    5 of 5 stars  Shale Ridge Farm LLC
    By Blair in Shamokin PA on 08/31/2011
    Verified Purchase

    The mist blower works as expected. No problems, so far. I also use Solo's backpack sprayers and have had many years of good service with them.

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  • 17 of 17 people found this review helpful:

    5 of 5 stars  Mosquito Free
    By Jeff in Memphis, TN on 01/14/2015
    Verified Purchase

    This works. It isnít cheap, but it works. I was rather hesitant to spend this kind of money, but my desire to use my backyard in the summer won out. We live in the Memphis, TN area, in a wooded lot with a lot of bushes: i.e. mosquito heaven. I would get multiple bites just walking to the mailbox and back, let alone when our three kids would play in the backyard. If we wanted to spend any time outside, we had to drench ourselves with bug spray, otherwise they feasted. I finally got fed up staring longingly at my backyard through the windows and started looking into ways I could control the mosquitoes in our yard. I bought one of those handheld propane foggers, and it sort of worked for a short time. There wasnít a residual, and the mosquitoes found us soon after. Local companies wanted up to $150/month to fog my yard, and I was just about to break down and do that when I figured that this fogger would pay for itself pretty quickly if I used it for just a couple years. Iím glad I did: mosquitoes are hardly a problem anymore in my backyard. This isnít a 100% solution for me, but we can deal with a bite or two every once in a while in order to go outside whenever we want without bug spray. Itís almost strange to go outside now without mosquitoes swarming us. If I go too long between treatments, the kids ask me to kill the bugs now. Iím still trying to find the right combination of concentrate to water, saturation of my bushes, frequency of fogging, and dosage setting on the fogger. It seems like the bug population starts to pick up after about 2-3 weeks, so Iím not sure if thatís me, or just the reality of where I live. The ďproblemĒ is that I only had to fog a handful of times (once I got it this past summer) in order to control the bugs, so I didnít have many opportunities to tweak how I fogged. The machine runs really well, and starts pretty easily. It is heavy: 4 gallons of water and fuel, on top of a 25 lbs engine and thatís 50+ lbs. Once you get it on your back itís comfortable, but it can be awkward trying to get it there. You also get an additional benefit of being able to use this to apply Talstar to the outside of your house too. I did that while I was treating the yard, instead of using a pump sprayer inside and out like I normally have and we havenít had any bugs inside. I canít speak to the longevity as I just got it this past summer. But, if you something to control the mosquitoes in your yard, this is it.

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  • 16 of 16 people found this review helpful:

    5 of 5 stars  Great Product
    By Mps in WI on 09/19/2012
    Verified Purchase

    Awesome product and even better customer service from DoMyOwnPestControl!! Thank you!

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Most Recent Customer Reviews
  • 1 of 1 people found this review helpful:

    4 of 5 stars  Pleased with the Solo 451 mist blower
    By Randy in Polk City, Iowa on 03/06/2017

    Blower arrived in great shape. It was purchased to spray a small home orchard. With the booster pump added it reached the tops of the trees as advertised. The motor started with a couple pulls. I antisipated a heavy machine and with the added chemicals it is indeed. I am fairily mechanical. The photo instructions to add the booster pump could use improvement. The photos are not very clear. One of the hoses was too short and required purchasing a new length of hose.

    Expert Response   Expert response:
    Thank you for your comments! We apologize that the manufacturer instructions are unclear. There are different hose lengths included, so one will be too short if they are installed in the opposite placement. Please let us know if we can further assist you anytime. We appreciate your feedback and your business!

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  • 2 of 5 stars  Cheaply Built
    By Zj in palm coast on 12/19/2016

    I bought this with the intention to treat up into trees. They say aprox 30ft and the tube and handle will not allow it to move into the upright position. Also 15-20 feet would be about as far as you can treat.

    Expert Response   Expert response:
    Thank you for your comments! You will definitely lose distance when using the Solo 451 above horizontal. You can purchase the Liquid Booster Pump for added vertical reach:

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  solo 451 - Does Exactly What You Expect, Does it Well
    By Kevin in Plymouth Massachusetts on 06/27/2016

    I live in a heavily wooded area in Southeast Massachusetts, we have a built in pool and with the short summer season here we want to spend s much time out doors as possible. Because of the wooded area the mosquitos are brutal, I purchased the Solo 451, and I am very happy I did. It works great controlling the mosquitos. I followed directions, used it at dusk, avoided the plants the bees favor and couldn't be happier. This thing is heavy when full with insecticide but very manageable if using a table to load it on your back. Start with the low flow setting on insecticide dispersal. I use the lowest setting and it works just fine even with the high population of mosquitos and large number of trees and bushes. I Highly recommend it. Seems well built. Easy to use, takes no real time to prepare and treat my 3/4 acre, I have a lot of trees and bushes, but it is just a walk around the yard.

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  • 5 of 6 people found this review helpful:

    1 of 5 stars  Beware
    By Tony in California on 04/24/2016

    So far I give it a one star rating because I have not been able to use it yet. I followed the instructions in the owners manual of doubling the oil content in the mix for the first five tanks. I start the engine and it starts running rough immediately after start up. I have pure water in the pesticide tank so I can test the machine. The engine does not climb to full rpm at any time. Choke was disengaged right after starting it up and it seems to operate as designed. I replaced the gas/oil mix in the tank with regular 50:1 ratio/ 2.6 fl oz per gallon and the rough-running continues. I pulled the spark plug and it is black like from running extra rich. I cleaned the SP, reinstall it and the rough-running continues. I don't want to start messing with adjusting the carb so I look up Solo dealer locations to take it in. My closest dealer is over an hour away! I ordered a new spark plug and I'm getting it soon - I will try that first and then I guess I will have to drive over an hour if that does not cure the problem. A GIGANTIC disappointment to say the least. I bought it because it is supposedly Made in Germany . . but . . the Bosch spark plug I took out is Chinese!

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  • 3 of 4 people found this review helpful:

    4 of 5 stars  451
    By T in CA on 04/23/2016

    My company purchased one of these for mosquito treatments. Used it on a couple of houses, so far this is what i've noticed. 1. Its awkward to handle. I weight 150 and have a bad back, it was a struggle to use it all day. If you fill on a tailgate of a truck its not that big of a deal, but if you have to fill and dead lift from the ground it'll wear you out. 2. Its loud. While using it I had to stop and have the "is that safe?" conversation twice with neighbors. So you turn off the engine, set the backpack down, explain yourself for 5-10 minutes, start the engine, put it back on, and get back to work. It can be time consuming. Would be nice to have something more discrete. 3. It puts out way too much product for some houses. Even on the lowest setting, you don't use the trigger much. Instead you take your left hand and adjust the flow and let the idle put out product. Would be nice to have a lower setting or have the flow adjustment in a place where you could do that with your right hand. But overall, I'd give it 4 out of 5 stars. It does exactly what its supposed to do, and if you have shrubs or a heavy wooded area and don't mind the weight/noise it is a perfect product.

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  • 10 of 13 people found this review helpful:

    1 of 5 stars  Wish I got the Stihl
    By Phil in farmington, UT on 04/11/2016

    Mine leaks. The little rubber boot under one side of the tank consistently lets chemical out and gets me wet. I wouldn't mind but I have to assume this stuff I am spraying isn't too healthy for humans. I wear goggles and respirators, and now a waterproof jacket...... which it still runs down and wets my legs. Going to sell mine and buy the Stihl

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Solo 451 Mist Blower
    By David in Milford, IA on 12/01/2015

    I have a 20 year old Solo mist blower that served me well for all those years. I decided it was time to get a new blower and this is as good as the old blower and has several improvements over the old blower. I am very satisfied with the new blower and look forward to many years of service from the new blower.

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  • 11 of 14 people found this review helpful:

    1 of 5 stars  DONT BUY THIS!!!!!!!
    By Stan in Union Grove, Al. on 08/06/2015

    Worst piece of junk I have ever owned. I spray for mosquitoes commercially. Bought this product after having issues with the Stihl SR 450. Day 1 second pull and the handle broke off the pull cord. Got it cranked and it ran so rough I had to immediately go to my mechanic and have him adjust carb. Day 2 spray stream is inconsistant. It changes about every 10 seconds. Almost like air volume varies up and down. After fifth yard the pull start broke. Now there is no resistance when trying to crank motor. Cord will not turn motor to crank. Day 3 Solo sits in garage and I am back to using the first Stihl I bought 6 seasons ago, the SR 420. I will take the problems with the SR 450 over this piece of junk anyday. Rating zero stars or maybe -1.

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  • 10 of 12 people found this review helpful:

    4 of 5 stars  Commercial Use
    By Maryland in germantown on 09/04/2014

    It gives great coverage but the settings are nuts. There are four settings for flow and I can't imagine a situation where you would use the 3rd or 4th setting. The 4th setting blew through the 3 gallon tank in under 2 minutes. I don'think the complaints about the weight are warranted but maybe that's because I am a bigger man.

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  • 14 of 15 people found this review helpful:

    4 of 5 stars  Good but a few things could be better
    By Homeowner in Arkansas on 07/16/2014

    Bought this primarily to spray all of the landscaped and other surrounding area around our house for mosquitoes. First the cons... Based on my experience with farm spraying and from reviews of others, I immediately bought the optional pump. I'm glad I bought it and in fact think it should be standard equipment. There is no way you will get an even spray volume distribution by the standard gravity feed unless you are spraying small plants that can be done with a low and constant nozzle height. And you can't spray the upper parts of tall plants or surfaces at all unless you have the pump. The pump also has a return line to the tank that serves to keep the spray solution mixed. This website doesn't have the optional pump listed, but informed me by email that it was available from them. I had already found it elsewhere in stock with easy automated ordering before I received the email reply from this site, and it arrived before the blower (but I was pleased with how quickly this site shipped the blower as well). Be aware that the optional pump is about $125 (delivered price). It also may be a bit of a challenge for some to install if you aren't at least somewhat of a handyman type. The other problem I encountered is the flex hose doesn't attach securely to the elbow. It slips over a barbed male nipple and is secured by a hose clamp. But the hose barbs are too small (hardly a barb at all) and it's hard to get the clamp tight enough (it's plastic and I was afraid of stripping the screw threads in the plastic or breaking the plastic band if I tightened the clamp any tighter). The first time of use the flex hose came off almost immediately. I put it back on and tightened the clamp tighter, and it still only lasted about half way through the first spray tank load before coming off again. So I put it back on, tightened the hose clamp, and then put two small screws through the flex hose and elbow nipple, adjacent to the hose clamp. That fixed the problem. Other than these issues, which I was satisfactorily able to overcome, I really like this blower. I've only had it about 2 weeks and have only sprayed everything twice (but multiple tank loads each time), so I can't speak first hand to longevity, but the engine seems to be well made, high compression, and starts on first or 2nd pull every time so far. I like that the spray tank and pump system is very easy to rinse/flush when done for the day.

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Most Helpful Q&A's

06/20/2013 Sue from Edgartown, Ma

QWe've just purchased a Solo 451 backpack mist blower from you. What is the best solution for mosquito control?

AOur best recommendation for mosquito control is the Talstar P. It is a great safe insecticide that can be used in a wide variety of areas to control mosquitoes as well as a plethera of other insects. The Talstar is used at the rate of 1 ounce per gallon of water so you would need 3 ounces for the 3 gallon tank of the Solo 451 unit. Concentrate your spray on areas where mosquitoes are more prone to harbor, like nearby bushes and dense foliage of trees that can hold moisture under the leaves.

10 of 12 people found this answer helpful.
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06/01/2013 Mike from Montgomery, Al

QHas the Solo 451 been tested or used to apply herbicides in forestry applications?
Specifically invasive species such as Kudzu, etc. using Triclopyr or Transline, etc.

AWe contacted Solo and they said that any herbicide or insecticide can be used in the Solo unit. So any product that includes Triclopyr or any other ingredient that would be diluted with water in the tank will work fine.

6 of 6 people found this answer helpful.
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05/29/2014 Fabio from Lake Barrington

QTalastar P vs Bifen IT
I just got a response from another question suggesting this Solo 451 product along with Bifen IT. In all recommendations I reviewed on this website it is recommended Talstar P as safer product. I understand Bifen is very toxic. Can you please explain the differences between both products? My property has a natural pond in the back (200 ft from the house) and it is a wooden area. Thanks

ATalstar P and Bifen IT are essentially the same product but made by different manufacturers. Bifen IT is the low cost, generic version of Talstar with the same efficiency. Talstar P and Bifen IT both share the benefit of being a low toxic option with minimal dermal toxicity. However, since you are close a pond we would recommend using EcoVia EC which is a safe, natural, residual insecticide that can be safely used around bodies of water without harming aquatic life.

5 of 6 people found this answer helpful.
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08/23/2012 Chris from Los Angeles

QCan use the Solo 451 Mist with insecticide like Riptide 5.0% Pyrethrin ULV for cockroaches control?

AYou can use Riptide in the Solo 451 but it must be used outdoors only. Only roaches that are directly contacted by the wet spray will be killed.

4 of 7 people found this answer helpful.
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12/31/2014 Glenda from Atlanta, Ga

QWhich product(s) do you recommend for both MOSQUITO and FLEA control with the Solo 451 Mist Blower?

AWe would recommend Bifen IT insecticide mixed with Nyguard IGR for both mosquitoes and Flea control. You would simply mix 1 oz of Bifen IT with 12 mL of NyGuard IGR per gallon of water to kill and prevent mosquitoes and fleas from reproducing. 

3 of 3 people found this answer helpful.
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Most Recent Customer Questions

12/11/2016 James from Durham, Nc

QCan I spray Suspend Polyzone SC with the Solo 451 Mist Blower for mosquito, tick and ant control?


Yes, Suspend Polyzone can certainly be used with the Solo 451 Mist Blower for applications for mosquito, tick, and ant control. Please let us know if we can be of any more assistance.†

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08/30/2016 Scott from Walkerton, In

QDo you have organic chemicals that work with the Solo 451 Mist Blower?
I am interested in the Solo 451, however, do you have any organic chemicals that work with this machine?


Essentria IC3 and EcoVia EC are two of our natural bug sprays and they are labeled to be used in mist blowers such as the Solo 451 Mist Blower.

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08/23/2016 Cathleen

QWhat is the warranty for the Solo 451 Mist Blower?


Solo's small non-road power equipment engines are warranteed for a period of two years. If any emission control related part on your engine is defective, the part will be repaired or replaced by Solo.†

1 of 1 people found this answer helpful.
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07/29/2016 Catherine from Grantville, Ga

QWhat is the guarantee on the 451 Mist Blower?


The Solo 451 Mist Blower is warranteed for 90 days with us. For additional warranty information offered through the manufacturer, please contact the Solo at (757) 245-4228.

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07/06/2016 Jim from Battle

QIs there a product for a Solo 451 Mist Blower that will control biting flies?


We recommend to mix Talstar and Archer in the†Solo 451 Mist Blower†to control flying insects including biting flies. You would dilute 1 oz of Archer with 1 oz of Talstar per gallon of water.†

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05/26/2016 Ron from Roberts

QWhat should the liquid dosage control on the Solo 451 Mist Blower be set to?
What should it be set at? A 4-position liquid dosage control permits you to have a selectable output from 0.12 to 0.89 GPM.


Most users will set the Solo 451 Mist Blower at the 1st or 2nd setting on the 4-way dosage control. If you are using a higher setting, then you will need to walk very quickly to avoid applying too much product in an area. We would suggest testing the sprayer with just water so that you can get used to how quickly it dispenses spray before adding your insecticides.

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05/19/2016 Lc from Lino Lakes

QHow do you mix the oil and gas for the Solo 451 Mist Blower?


The oil and gas mixture will depend on which oil is used inside of the Solo 451 Mist Blower.†If you are using the Solo 2T Oil, the mixing ratio is 1:50. If you are using any other two stroke oil, the mixing ratio is 1:25.†

0 of 1 people found this answer helpful.
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04/26/2016 Dan from Daggett, Mi

QIs it necessary to have a pump on my Solo 451 for mosquito control?


The Liquid Booster Pump is not required for use with the Solo 451, it would be used if you would want to increase†formula output and application range only.

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04/18/2016 Jonathan from Potomac, Maryland

QWill Talstar leave a mist on windows?
If I use a Solo 451 Mist Blower to apply Talstar P to shrubs and bushes that are close to a house, will the Talstar P leave a visible residue on window glass? I'm worried that I will not be able to control the large volume of mist from the blower, and that it will make windows visibly dirty.


There is potential for Talstar to leave a slight residue on windows. We would advise to make†your application on a day that is not too windy. Be sure to review our video for using the Solo 451 as you can adjust the setting.†

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03/24/2016 Dennis from Sanger

QCan the Solo 451 be used as a leaf blower also, and is it efficient?


Yes, the Solo 451 Mist Blower can also be used as a leaf blower and it does a great job.

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