i am pissed that i have paid 52.00 for a package of 4 and i used it within a month and my dog still has fleas!!! i think this is a rip off!!!! the way i see it is i paid 52.00 and all it did was fed the fleas!!!! not happy about that!!! would like my money back so i can try something different!!! i can not afford 52. when the product does not even work!!!! my dog is still scratching and digging at her self dont think that it is fair to her or me!!!! want my money back!!!!!