Fendona CS Controlled Release Insecticide with Alpha-Cypermethrin - 3.0% as an active ingredient, it is encapsulated and works up to 90 days.
Long Lasting on MosquitosThe bigger companies mix this with Bifen for their mosquito control programs that can get quite expensive. I called Basf Technical about it and they admitted over the phone that the big guys (the squad for sure) have worked with them to come up with a mixture of the two. I used it this past summer on some of the tougher yards I have and didn't have any call backs, even with the heavy rains we had over the summer. It is about 5x the price of Bifen but it does seem to last quite a bit longer.