^Also, I don't know if said friends are using neem correctly. It's pretty solid at room temperature (it solidifies at about 68-70), so you have to warm it gently (I toss the bottle into a warm water bath since my house is often below 70 indoors), then mix a teaspoon and a half into a quart of very warm water (as hot as your tap will go is probably advisable). By the time you make it out to your garden, it will probably try to harden up again, so you have to constantly swirl it into the now warm water as you spray. It should stink to high heaven throughout the process (neem is FOUL smelling, but I'm okay with that since it really works for me). I never use a sprayer bigger than a quart because I need it to stay warm and liquid during the process...if I need more than the quart, I go back in and repeat.
