I HAD THRIPS THIS LAST HARVEST. I GOT EM 4 WEEKS INTO FLOWER. SPRAYED EM, AND GOT RID OF EM ALL. BUT I STILL GIVE 5 SQUIRTS FROM THE CAN INTO THE ROOM, ONCE A WEEK. I STOPP THE WEEK BEFORE I HARVEST. CAN'T TASTE ANY RESIDUAL. GOOD LUCK WITH THEM LITTLE BASTARDS. THEY PUT MY HARVEST OF BY 2 WEEKS. PLANTS LOOKED LIKE HELL.