Neem Oil/spray

I've had bad experiences using Neem spray. I've found that it KILLS some plants! Now, I may be using it wrong but IDK. Heavily spray after lights out to both under and on top of ALL leaves, soil and container. What am I doing wrong? Am I supposed to rinse it off after a little while {how long?}? I also found this video that mentions problems with Neem Oil burning plants. Is this because the Neem Oil clogs the plants pores and kills it this way? I bought AZAMAX strictly because of this issue. http://www.bing.com/videos/search?q=Azamax+Cannabis&view=detail&mid=9F91678D452963B7AFB09F91678D452963B7AFB0&first=0&FORM=NVPFVR&qpvt=Azamax+Cannabis

I've never had a problem with Neem.
In fact my plants seem to love it.
I use it up to 3 weeks before harvest.

However I do not spray all the time and I use a very diluted solution 1/8 tsp ( or less ) per quart.

If your using Neem in hot dry conditions or over using you will run into trouble. Or spraying with the lights on.

One tip...shake the crap out of the bottle before using. Un-properly mixed neem can spell trouble too.

But if your spraying for bugs ...use something else.

I just use it for general maintenance...not bugs.

I would like to add that I use a little insecticide soap in the mix as it helps disperse the neem throught the water. I also read that you should use warm water as neem will disperse better in warm water. Hope this helps.

forgot to add that azamax also kills beneficials so I wouldn't use it all the time myself.