neem oil help

[martinpeters]

i purchased neem oil to kill catterpillers on my plants but i am unsure what concentration i need and if i can use it during flowering. can anybody help me please.

[stinkyattic]

It won't kill caterpillars. It will probably stop them feeding though.
Read the bottle for mixing instructions.
You can use it up to 3 weeks before harvest. It isn't toxic to humans, just smelly and bitter tasting, so you need to give 3 weeks to break down, and don't spray on buds, obviously.