Rollitup

If you have PM on keeper clones, the proper way to use it IMO is to take fresh clones, treat them (full soak) and then start over in a sanitized grow room. Soak the grow room and fans down with hydrogen peroxide spray.

That way you only have to use it one time and you stay free of PM. I would never recommend to spray it on flowering plants, rather just use 1% milk spray or neem oil etc to control the PM until your crop can finish, then sanitize.