The first full-spectrum neem oil EPA-registered for homeowners

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EPA-Registered Neem Oil

NimBioSysTM Neem Oil Biological Insecticide is a major step forward for home gardeners. Until recently, you could buy EPA-registered neem oil labeled to treat insect pests on crops at "big box" stores, but the azadirachtin – generally considered to be the most important insect-controlling compound – had been removed and sold as a separate product.

Neem oil has been used in tropical countries for thousands of years and multiple international studies have documented its efficacy at controlling up to 200 insect pests. Unlike toxic pesticides – including botanically based products like permethrin that also kill beneficial insects –  neem oil contains nearly 100 different compounds that repel some pests, disrupt growth hormones in others and affect fecundity in insects like house flies.

The EPA registration comes after two years of extensive testing and review of data from dozens of international studies with the final report noting that 100% cold-pressed neem oil is “practically non-toxic.”

NimBioSys Neem Oil Biological Insecticide is labeled to treat a wide variety of pests including aphids, beetles, stink bugs, leafhoppers, whiteflies, mealy bugs, mites, weevils, scale and thrips. According to the EPA, the cold-pressed neem oil “will not cause adverse effects to humans and other nontarget organisms when used according to label directions.” It can now be sold in every state except Alaska.

Eight-ounce bottle of neem oil makes 8 to 20 gallons of neem spray for plants. We've been using neem-aloe soap as an emulsifier and been delighted with the results. Here are directions for home use.

The complete EPA Biopesticides Information Registration document is available online at this location.

8 ounces

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