Whomever said that it stinks up the whole house was telling the TRUTH! My poor hubby feels like I've tortured him. We put neem oil on his scalp, covered with a plastic cap, a satin skull cap and a wool cap overnight. He washed it out this morning and refuses to use the caps, pillowcases and anything else with the smell. LoL
I made a mix of peppermint and lavender oil in a safflower oil base and rubbed that into his scalp. Then I massaged some MT into his scalp and slathered V05 onto his hair. We covered it with a plastic cap hoping it would "bake" into his hair and cover the neem smell.
He won't even let me do it once a month. So now I have a whole bottle of neem oil! I guess I'll have to use it in my landscaping. LoL