I don't know I wouldn't chance it...get some new stuff and a bug bomb(IF your flowering they have ones you can use till last week of flower(Pyrythium(organic)...I think))
Get some of those yellow sticky strips...white flies are atrackted to yellow and the strips work well along with neem and an overdose of CO2 in your grow room could help get rid of them.
Or a sulfar burner.
J DOG 6000 Reviewed by J DOG 6000 on . Neem Oil gone bad? i got a pour of neem oil some months back and need to use it now for fuken white flys cus the dish soap water trick aint cutting it Now my neem oil is solid WTF at first it was chunky now its a whole solid piece....did it go bad? must i get more? fucken white stupid flies are getting me Again :mad: any other ideas ...plz let um fly Rating: 5