Check between the bud and the stem for pollen sacks they like to hide in and behind the bud. I used reverse and it dose work but when things get thick you cant seem to treat the whole plant. I treated it the first day of flowering and every ten days after that I had a 90% pollen reduction compared to the last batch so I know it works. But it cost about $20 a bottle I went through 2 bottles but gained more Oz's in the end