I have been using these for 5 years and glad seller has them for a good price. Even though I use all the popular flea treaments for my 11 pets (Capstar, Comfortis and Frontline), the pests keep multiplying. I have 4 of the traps in my home and these sticky discs lure approximately 50 fleas per week in addition to all the other measures I've taken, and glad to have them so they don't bite me and the family. A+++++++