Verified Purchase(What is this?)
This review is from: Whitefly Control - Large Pack of 20 cards
I bought these at exactly the wrong time of year. I felt that anything to deal with our whitefly infestation was better than nothing, and despite it being October I would give them a try. And they undoubtedly worked in part: the infestation was definitely damaged, but not destroyed. Maybe that is all you can hope for with biological controls. Will probably do better if bought at the right time.