none...and if you read the warning label it is sounds like 3 mile island...that is why i said to keep the closet door closed on it...if you are sleeping in the same room you might be better off with the lady bugs as my grow room is a separate building from my house...so just to be safe..look at both options...i don't reccomend being in a room breathing those long term with out proper ventalation...that plants do not absorb the active ingredient though :thumbsup: