I ran into hermies week 3 of flowering last grow, running into it again on week 3 with 2 clones. I think mine were stress related causes though. That being said, I didn't spray anything on the last grow, but I almost daily picked those sacks hoping it was before pollen formed. Sometimes I was pulling premature sacs, other times they were filled with fresh nanners, and at times they were matured full of pollen. It was a lot of work, but in the end I grew it to full flower which took 11 weeks (it was a long veg stage). I had zero seeds. Im growing for myself and don't have other plants to worry about, so I didn't just chuck it. I got 2 ounces of high quality bud out of it. Pissed my 2 clones hermied, but thinking if I can get 4 ounces at minimum it's worth it. But if if I had other plants to worry about then maybe I would have toased them...