I am a rosarian, have few dozen of roses at home.. constantly fighting war with thrips & spider mites . Tried neem; baking powder ; soap , DE , alcohol, sulpur, & many more brands but not much help. These nasty guys still win.. I just bought this organo matryine and tried yesterday night, generous dosage all over the plant . Very happy with the result ! First time can’t see a single live thrips at the back of the leaves, all buds still open beautifully the next day. Young leaves never got burn!