ULD HydroPy-300 Pyrethrin


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ULD HydroPy-300 Pyrethrin gallon (128 oz)

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ULD HydroPy-300 Pyrethrin

ULD HydroPy-300 Pyrethrin is a special water-based 3% Pyrethrin formulation that kills insects fast. It is designed for ULV fogging and misting systems to control mosquitoes and many other insects.

In New York State, this may NOT be applied using outdoor residential automated misting systems.

  • Dual-Synergized for Quick Knockdown and Kill
    HydroPy-300 is a dual-synergized pyrethrin formulation containing 3% pyrethrin and 16% synergist designed for great performance
  • No Agitation Required
    HydroPy-300 is a water-based microemulsion that is specifically designed to stay in water solution without agitation
  • Low Phytotoxicity
    HydroPy-300 has been used in mosquito misting applications for over 3 years with little to no phytotoxicity, when used according to mosquito misting label directions
  • Broad Label
    HydroPy-300’s label includes specific directions for automated mosquito misting use
    Kills a wide range of insects including mosquitoes, gnats, flies, spiders, etc
    Wide range of dilutions

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05/15/2013 Barry from Greenville, Sc

QWill HydroPy-300 ULD kill the bees that are making holes in wood parts of my house?
Large black and yellow bees drill perfect holes in anything wood and apparently nest in there.

AIt sounds like  you may Carpenter Bees. Please refer to our article on How to Get Rid of Carpenter Bees. We have also put together a carpenter bee kit  that includes the dust and dust applicator to apply into the bored holes and the residual spray to spray along the outside of the holes. Please let us know if  yu have any other questions.

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10/24/2015 Jeremy from Ontario

QWhat is the difference between ULD Hydropy 300 and the ULD BP 300?


The†ULD HydroPy-300†is a special water-based 3% Pyrethrin formulation, whereas the ULD BP 300 is still 3% Pyrethrin, but it is oil-based.

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06/01/2016 Justin from Central, Maine

QWhat is the dilution ratio for ULD HydroPy-300 Pyrethrin in a thermal fogger?


The ULD HydroPy 300 Pyrethrin should only be diluted with water. The mixing ratio is 1 fl. oz. per gallon of water. You can browse our thermal fogging solutions here.

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06/16/2010 Joe

QWill HydroPy-300 ULD Pyrethrin get rid of water bugs(american roaches)?

AHydroPy-300 ULD Pyrethrin will kill the roaches that it makes direct contact with while it is wet. It will not eliminate the roaches that do not make direct contact with the wet spray. To get control of the roach infestation you need to use an Insect Growth Regulator such as Gentrol IGR. American Roaches come from the outside of the home (usually attracted to lights), so it is best to spray a liquid insecticide around the outside foundation of the home such as Talstar One or Cynoff WP, rather than using roach baits. Also focus on sealing up cracks around doors and in the foundation so roaches can't get in.Also HydroPy-300 ULD Pyrethrin is currently off the market, as an alternative, we recommend a similar product called Riptide Pyrethrin ULV.

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