Thrip/Mite Killer

A good friend shared this with me, I haven’t had to use it yet, but he swears by it!


The Thrip/Mite Killer ingredient list:

Cottonseed oil ( food grade frying oil bought online, 96 ozs)Amazon-Glicks-$25.99

Distilled water (I use deionized just because I have it available)

Polysorbate 80 Food Grade (I bought a 32 oz [900 gm] bottle online)Amazon-Velona-$32.04

Food grade Citric acid (many sources online)

Food grade L-Malic acid (many sources online)

100% Ethanol (Hey, Everclear will work just fine at 190 proof). Let’s send the little basturds out with a buzz!

NOTE: Polysorbate 80 is available world wide, Many brand names exist (Tween 80…etc). Food grade formulations are readily available and should be used in this formulation !


  1. Measure out 18 fluid ounces (532ml) of distilled water and pour in you pitcher/beaker.

  2. Weigh out 50 grams of EACH, Malic and Citric acid, and add to pitcher.Dissolve in water with your hand blender.

  3. Add 25 fluid ounces(739ml) of cottonseed oil to pitcher.

  4. Add 150 ml of Ethanol to pitcher.

  5. Add 5 fluid ounces(148ml) of Polysorbate 80 Food Grade and hit it with your hand blender for 2-3 minutes, and you will have a beautiful, stable emulsion ready to go ! This formula will yield about 52 ounces (1538ml)of MTA UltimateUM. By halfing all ingredients, you’ll have about 26 ounces(769ml) for short term storage…you can mix more at will with the ingredients on hand. That means with the 96 oz of cottonseed oil, you will yield 197 ozs ( 1.5 GALLONS/5826ml) of concentrate! (I would only prepare one batch at a time to keep it fresh and available!)


Like you were reading my mind. Just looking that up. How funny. Is this a foliar spray or a drench ?


It’s a foliar spray!


Thanks how did you know lol


I been seeing a lot of thrips and mites on rose bushes where I live and I have seen a lot of pictures here on the forum that look like they have those nasty critters on them! Lol!


Nice. I know this recipe, I friend of my shared it also. Lol. Works really well :+1::+1::v: