This may not work for FRH above, but it will absolutely work for me. I have a dedicated metal pizza pan, a small clear glass juice cup, and a plug in light that was used to illuminate a plastic pumpkin. Place glass in centr of tray, fill tray with water and dawn dish detergent. Put in dark room or area and place light inside glass and it will attract and kill any flea in area. My garage got taken over by fleas 2 years ago thanks to a stray cat that took up residence a few days without me noticing it. After the cat was removed the fleas stayed and multiplied. I tried a few products, but nothing would/could rid them all. So I set the above system up, left garage closed and dark except for a few water change outs, I was able to rid all fleas from garage in a week. Don't believe me, try it for yourself....