Merit 75 WP - 2 oz.

$35.75

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5 out of 5 stars Rating: 4.9

13 Reviews | 44 Q&A

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Merit 75 WP - 2 oz. jar (2 oz)

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Merit 75 WP - 2 oz.

As a low cost alternative we recommend Adonis 2F which has the same active ingredient as Merit and treats the same insects.

Merit 75 WP is a broad-spectrum systematic wettable powder concentrate which can be used at very low rates and applied as a foliar spray, soil broadcast spray, soil injection or soil drench to control grubs, weevils, and other soil and turf inhabiting pests. Soil applications are taken up by plant, ornamental, and tree roots into twigs, stems, and foliage. Merit 75 WP includes detailed instructions for application to turfgrass, ornamentals, trees, shrubs, flowers, groundcovers, and in and around commercial or residential buildings. All applications recommend the use of a sprayer for application which will produce a uniform, coarse droplet spray when used at a low-pressure setting.




Merit 75 WP is a broad-spectrum systematic wettable powder concentrate which can be used at very low rates and applied as a foliar spray, soil broadcast spray, soil injection or soil drench to control grubs, weevils, and other soil and turf inhabiting pests. Soil applications are taken up by plant, ornamental, and tree roots into twigs, stems, and foliage. Merit 75 WP includes detailed instructions for application to turfgrass, ornamentals, trees, shrubs, flowers, groundcovers, and in and around commercial or residential buildings. All applications recommend the use of a sprayer for application which will produce a uniform, coarse droplet spray when used at a low-pressure setting.

Merit can be applied as a root/soil drench. Insecticides applied to the soil are taken up by the roots and translocated throughout the tree or shrub. Root/soil drenches offer the advantage of requiring no special equipment to apply (other than a bucket or watering can). However, surface layers of organic matter, such as mulch or leaf litter, can bind the insecticide and reduce uptake. Before applying drenches, it is important to remove or pull back any mulch or dead leaves so the insecticide solution is poured directly on the mineral soil. It is also important to keep the soil around the tree or shrub moist for the next 7-10 days after applications to encourage uptake.

TREES:

To calculate how much Merit you need to purchase, you will need to measure the diameter of the tree trunk.  You will need 0.7-1.4 level teaspoons of Merit per inch of diameter. The highest rate should be used for all boring insects. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of tree diameter but you may use 1 quart -1 gallon of water per inch as well. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested.  Since sandy soils can accept more water, using the higher volume of water is preferred.

* Example: If a tree has Emerald Ash Borers the highest usage rate of Merit would need to be used (1.4 level teaspoons per inch of diameter).

If the trees diameter is 11.5 inches you would need about 16 teaspoons (5.5 tablespoons) of Merit. If the tree were in sandy soil you could dilute the Merit with up to a gallon of water per inch of trunk diameter.

In this case you would dilute 16 teaspoons of Merit into about 11.5 gallons of water.

Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved.

SHRUBS:

You will need to use 0.7-1.4 level teaspoons of Merit per foot of shrub height. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per foot of shrub height but you may use 1 quart -1 gallon of water per foot of height as well. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested.  Since sandy soils can accept more water, using the higher volume of water is preferred.

* Example: If shrubs had white fly you would use the mid- usage rate of Merit (about 1.05 teaspoons per foot of shrub height)

If the shrub height is about 3 feet then you would need 3.15 teaspoons of Merit. If the shrub is located in dense clay you would use the lower volume of water, 1 pint per foot of shrub height.

In this case you would dilute 3.15 teaspoons of Merit in 3 pints of water.

Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved.

Tip: How to treat multiple shrubs

Cumulative feet of shrub height is the total height of all shrubs to be treated. This is determined by estimating the height of all individual shrubs in feet and totaling the sum. With this information, you can correctly mix the appropriate amount of Merit needed for the shrub or foliage plant application.

Example: If you have two shrubs that are 2 feet in height and one shrub that is 5 feet in height you would have 9 feet of cumulative shrub height. Measure the Merit according to the instructions above and apply to the individual shrub according to its own height. For instance if you decided to use 1 gallon of water per foot of shrub height, the shrub that is 5 feet in height would receive 5 gallons of diluted Merit solution and the shrubs that were only 2 feet in height would receive 2 gallons each of the diluted Merit solution.

Rating Snapshot

5 stars   11
4 stars   2
3 stars   0
2 stars   0
1 star   0

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Average Customer Rating
5 out of 5 stars (13)

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  • 24 of 25 people found this review helpful:

    5 of 5 stars  Kills root aphids. Thank you
    By Cb in Denver, CO on 06/24/2011

    Our green house had a bad infestation of aphids and particularly root aphids. Did one treatment at 1/4 tsp per gallon. Poured about four cups per container or until very slight run off. 24 hrs later every aphid in the root zone had surfaced and was dead. There must have been thousands of aphids . I could not believe it. I'm sure a foliar spray would definitely knock out any bugs on the foliage as well. This product is systemic so it should hold a good residual in the root zone for a few weeks. The aphids try to come back but die off fairly quickly. Great product but use sparingly as noted.

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  • 18 of 18 people found this review helpful:

    5 of 5 stars  Merit
    By Chris in Cincinnati, Ohio on 05/03/2011
    Verified Purchase

    I had a terrible problem with Boxwood Leafminers and tried everything under the sun to try to eradicate them. I used Merit as a soil drench on about 150 boxwoods that were infested. One treatment did the job for me and now my boxwoods look spectacular. I really liked this product.

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  • 8 of 11 people found this review helpful:

    4 of 5 stars  merit 75 wp - 2 oz. jar
    By Bill in North Carolina on 05/13/2012
    Verified Purchase

    Seams to do what it claims but time will tell. It would be nice if a measuring spoon was incorporated into the jar.

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  • 7 of 8 people found this review helpful:

    5 of 5 stars  systemic pesticide worth it
    By Glenn in Bradenton Beach, FL on 05/10/2012

    I was hesitant to get this due to the cost but read other reviews being positive so I gave it a try. I needed a systemic due to plants hang inside and wanted something that would last not just a contact pesticide. I spray them outside then wait to put them back. As the other reviewer said a little goes a long way. So far the product is working on killing mealy bugs on hanging potted plants. It is a very fine powder so make sure not to mix in a windy area. I added a spreader sticker which I think helps keep product contact for absorption.

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  • 7 of 7 people found this review helpful:

    5 of 5 stars  Great stuff
    By Dk in South Bend, Indiana on 07/05/2012
    Verified Purchase

    Knocked the mealy bug in orchids due to the fact I could dunk the pot and get those bugs hiding out in the media. Now I am using it as a soil drench on ornamentals as well and it knocks mealy dead. About to order my second bottle.

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  perfect for so much
    By Landscape in Cleveland TN on 01/18/2013
    Verified Purchase

    You can't beat Merit for preventing and treating so many pests and diseases. Mixes well with water and is easy to use as a drench. NO spraying! I use it every spring for all my client's yards to avoid many problems down the line. Using it every year has virtually eliminated problems with boxwoods, laurels and so many more shrubs.

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  • 4 of 6 people found this review helpful:

    4 of 5 stars  Merit 75 WP
    By William in San Dimas on 02/25/2013
    Verified Purchase

    Received the product promptly, well packaged. Use my first six grams for my two year old oranges, lemon, lime and sweet limes. Picked off all the leaf miner infested leaves, put them in plastic bags, sealed and discarded. Then applied the product at the rate of half a gram per inch of diameter of the particular tree. Very easy to dissolve, afterward just hosed the base of the trees with a few gallons of water. Now I can only wait and keep an eye on all the new buds and leaves.

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  • 4 of 5 people found this review helpful:

    5 of 5 stars  White fly problem
    By Gabec in Davie Florida on 06/05/2013
    Verified Purchase

    Product acted quickly and results are as expected. For the quantity this product seems very expensive. It is concentrated and appears very strong in terms of chemical components. It did the job.

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  • 3 of 7 people found this review helpful:

    5 of 5 stars  Kills bugs dead!
    By Don in South Bend, IN on 08/07/2012
    Verified Purchase

    I love Merit 75 WP. Use it personally on my orchid collection and use it extensively at city conservatories. Mealybug was rampant in conservatories and now controlled with a regimen with this product as the main treatment along with fogging and Isopropyl alcohol. The product is easy to apply (I use drench) and immediately effective. So far retention of the product in the plants seems good. I would not recommend this nor any other systemic product for outdoor use on blooming plants due to loss of beneficial insects through poisoning.

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  • 3 of 4 people found this review helpful:

    5 of 5 stars  Hemlocks/North Caolina Mountians
    By Doug in Boone, NC on 06/15/2014
    Verified Purchase

    Merit 75 for my large hemlocks has been awesome. I have saved several large hemlocks around our house. Very easy to use-just mix in a 5 gallon bucket ,make a few holes around the base of the tree and pour in.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Merit 75 Very good for purpose
    By Jaki in California on 10/28/2015

    Purchased for wooly aphids that had invaded my orchids. Very concentrated but seems to have done the job very well.

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  • 5 of 5 stars  This Stuff Works
    By Tim in LA, CA on 05/06/2014
    Verified Purchase

    This works for water bugs. I had some bugs in my res and when I poured this in the next day they were dead.

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  • 5 of 5 stars  Wacked aphids
    By Dawsopn in Maggie Valley, NC on 06/08/2016

    I live in NC and have a potted schefflera. It winters in my garage (6 months of the year). Spring time means aphids. The soap spray was a dud. Black ants getting fat but not enough of them. A TSP of this sprinkled over the soil and then watered in. Gone! Gone from my Mandeviilla also. Whacks wolley adelgins from hemlocks. Takes about 3-4 months and lasts 5 years. They are back. I was told that it won't work a second time. We shall see.

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Most Helpful Q&A's

05/15/2010 Therese

QHow much Merit insecticide do I need?
I am a bit confused about how much product I would need. I have used Bayer Advanced and they ask for the distance around the tree and then to use 1oz per inch of distance. These instructions are quite different with this product. You have me dividing that distance(circumferance)to get the diameter. According to your formula I have 7 trees with a combined DBH of 82.72. Which at a rate of 1.4 tsp would mean about 116 teaspoons. So how many teaspoons are in the 2oz jar of product.

A

One 2oz jar of Merit WP contains enough product for about 30 cumulative inches of tree trunk diameter (at the highest concentration for systemic control). These small 2oz jars are usually purchased by people who only have to treat one or two trees or shrubs. When you need to treat several trees the Merit 75WSP envelope is usually the way to go. One envelope of the Merit 75WSP contains enough product for about 96 cumulative inches of tree trunk diameter at the highest concentration. As a low cost alternative we recommend Dominion 2L which has the same active ingredient as Merit and treats the same insects.  One bottle of Dominion 2L contains enough product for about 137 inches of tree trunk diameter at the highest concentration.

21 of 27 people found this answer helpful.
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08/29/2012 Roger from Toms River Nj

QHow do I drench apply Merit 75 to treat Bronze Birch Borer?
Do I dilute one package (1.6 oz) into 10 gallons of water and pour it around the tree? The instructions are not complete clear.

AWe agree, the directions can be very confusing. You will dilute the 1.6 oz pack in at least 10 gallons of water and pour the dilution around the base of the tree. You will need to use 1.6 oz (1 packet) MERIT 75 WSP per 24 to 48 inches of trunk diameter.

12 of 12 people found this answer helpful.
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11/21/2009 Keith

QHow do I use Merit 75 WP for emerald ash borer control on two trees?
I have been told by your expert that Merit 75 WP is the product to use as a drench for protecting 2 trees that I have from the emerald ash borer. What quantities, and what dilution rate do I need for a tree that is 10 to 12 inches in diameter?

AThe Merit 75 WP product label is one of the most confusing of all the products that we sell.  You need 1.4 level teaspoons of Merit per inch of diameter. This is the highest rate and should be used for all boring insects. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of tree diameter but you may use 1 quart -1 gallon of water per inch as well. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested.  Since sandy soils can accept more water, using the higher volume of water is preferred.

12 of 12 people found this answer helpful.
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09/29/2014 Susan from Tulsa Ok.

QTo spray the foliage of shrubs, how much Merit 75 WP to a gallon of water spraying for Aphids?

A

Using Merit 75 WP for the treatment of Aphids as a foliar spray you mix 0.7 to 1.4 level teaspoons MERIT 75 WP Insecticide per foot of shrub height or 1 to 2 ounces per 30 cumulative feet of shrub height. Below is the recommended application dosage rates for Merit 75 WP MERIT 75 WP
(Level Measure)                       (Water)
0.25 tsp.                               2.5  Gallons
0.5 tsp.                                 5.0 Gallons
1 tsp.                                  10.0 Gallons
2.5 tsp.                               25.0 Gallons 
5 tsp.                                  50.0 Gallons
3 Tbsp. + 1 tsp.                  100.0 Gallons

9 of 11 people found this answer helpful.
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04/17/2010 Matt

QI have a problem with grubs in my lawn. What kind of spray works best to kill them?

A

Merit, or the active ingredient in Merit, Imidacloprid, is the best product for grub control. It is important to start treatment prior to egg hatch. For optimum control irrigation or rainfall needs to occur within 24 hours of the application to move the product through the thatch layer and into the soil. You can contact your local cooperative extension office to see when egg hatch normally occurs in you region. Dominion 2L contains the same active ingredient as Merit and can be used as a money saving alternative.

9 of 19 people found this answer helpful.
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Most Recent Customer Questions

06/02/2016 Craig from Rutland, Ma

QWhat is the drench/foliar application rate for beetles on cucumber?
.2 tsp/gal? I'm spraying my giant pumpkin plant for cucumber beetles.

A

Merit 75 WP is not labeled for use on pumpkins, so we cannot give you an application rate to treat these plants.

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05/19/2016 Andy from New Weston, Ohio

QWhat would the mixing ratio be per gallon with Merit 75 WP to treat 1.5 Acres for grubs?
Or is there another product in a concentrate the would be better to use for a large area?

A

When applying an insecticide such as Merit WP, it is important to remember that the water you are using is a carrier, so it is most important that we evenly distribute the correct amount of product for the area in a sufficient amount of water, rather than trying to determine how much product we need per gallon of water. If using Merit WP, you would apply 6.4 to 8.6 ounces per Acre. We suggest using at least 2 gallons of water per 1,000 square feet so that the product is carried into the soil through the thatch layer of the grass. If you have equipment that can mix at least 25 gallons of solution at a time, then we would suggest using the Merit WSP or a generic of it, Adonis WSP. Each envelope comes with 4 water soluble packets, and each packet covers 8,250-11,000 square feet.

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12/10/2015 Jon from Pompano Beach, Fl

QWhat pests are controlled by Merit 75 WP?
Can't find any listing for what insects controlled i.e. Scale,mites. Looking for root mealybug control on phalaenopsis orchids?

A

Merit 75 WP is labeled for Mealybugs, Chafers, Chinch Bugs, Garden Beetles, Japanese Beetles, Billbugs, Mole Crikets, grubs and others. Please see the product label for a complete list.

2 of 4 people found this answer helpful.
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10/22/2015 Nicole from Loganville, Ga

QHow many teaspoons are in a 2 oz jar of Merit 75WP?

A

There are aproximately 40 teaspoons in a 2 oz jar of Merit 75WP.

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08/16/2015 Terry from Eugene, Or

QWhat are the likely side effects of using too much Merit 75 WP using the drench method?
. I miscalculated the diameter of my trees and have treated them with too much Merit 75.

A

The effects when Merit 75 WP - 2 oz. jar is applied off-label will be determined by many different variables.  Please contact Bayer at 800-331-2867 for further assistance in this treatment.

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08/02/2015 Oak from Shamokin, Pa

QWill Merit 75 WP be effective in controlling gypsy moth caterpillars?
I read elsewhere that a Merit drench in the spring helps control gypsy moths but the label of the product does not indicate that it is to be used for that pest.

A

Merit 75 WP is not labeled to treat Gypsy Moths. Using an insect spray such as Monterey Insect Spray containing Spinosad is the most effective way to treat for these types of caterpillars. When sprayed on the foliage, this products works by poisoning the caterpillars feeding on the leaves. It is more effective and generally lasts 3-4 weeks.

Garden Insect Spray with Spinosad is a concentrate that can be applied with trigger, hand-held, or hose-end sprayers. This product is not a synthetic chemical, but a bacterial product produced by fermentation. It is fast acting and odorless.

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07/23/2015 Cheryl from Omaha, Ne

QCan I treat for Japanese Beetles with Merit 75 WP and use Ross Tree Fertilizer?
I believe our two birch trees have Japanese Beetles from the look of the leaves. I have a Ross brand tree fertilizer. Can the Merit 75 WP be use with that? If so, how much do I apply per insertion point?

A

Adult Japanese Beetles can be treated with Merit 75 WP by spraying the trees. When you apply it systemically, you need to be able to apply the right amount of product per area with enough water, therefore using the product inside the Ross Root Feeders will not be a good idea. Please refer to the product label for Merit 75 WP for complete application instructions. For more information about treating this pest, view our Japanese Beetle Control page.

0 of 1 people found this answer helpful.
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07/16/2015 Dan from Evansville, Wi

QWhat is the best time of year for Merit 75 WP soil drench for Japanese beetles?
Have 2 large lindens being eaten by Japanese Beetles. We are having grub control put down. For Merit, what is the best time to put that down, I read whenever the trees are growing but is there a time that is best, spring, summer, fall? Also they seem to be liking a new Elm we just planted, very young tree, will Merit be OK on that?

A

Japanese Beetles feed on grass roots until late September when cool soil temperatures cause larvae to move downward into the soil to overwinter. Development is completed the following spring. One generation occurs each year. It is important to start treatment prior to egg hatch. For optimum control when apply Merit 75 WP, irrigation or rainfall needs to occur within 24 hours of the application to move the product through the thatch layer and into the soil. Please refer to the product label for complete application instructions. You can contact your local cooperative extension office to see when egg hatch normally occurs in your region. 

 

1 of 2 people found this answer helpful.
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07/15/2015 Raymundo from El Paso, Tx

Q Will Merit when applied for grub worms harm earth worms?

A

Merit 75 WP can harm beneficials such as earthworms.

2 of 2 people found this answer helpful.
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07/08/2015 Drew from Vancouver, Wa

QIs Merit 75 WP labeled to control European Chafer larvae on my lawn?
I have about 3500 sq. ft. to cover using a Pressurized Sprayer. How much of the packet should I use to control the chafer beetle larvae and at WHAT WATER RATIO do I mix it in my 2 Gallon Pressurized Sprayer??

A

Merit 75 WP is labeled to control larvae of European Chafer. You will need to use 6.4 to 8.6 oz per acre or 3 to 4 level teaspoons per 1000 sq. ft.  of Merit 75 WP. With 3500 sq. ft, you should use between 10.5 and 14 teaspoons. Make sure you use at least 2 gallons of water per 1000 sq. ft.

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