When you have fleas this bad desperate times call for drastic measures and you have to do all you can to protect your family, your yard, and your pets. This takes weeks to see the benefits and the IGR has to be photostable which means it can still be effective in areas where the sun is shining brightly and doesn't break down as fast or loose its effectiveness. The Bifen-IT is really effective as well and not just against fleas but mosquitoes and many other pest. Concentrate on areas where pets/humans frequent and spray areas where there is a lot of shade or that areas none to have a concentration of fleas. It will be the best money you will ever spend. Trust me just check my other videos on fleas and see how they were jumping on my like crazy. It was even worse in the afternoon and its like they came out of hibernation.
