I had brought a stray into the home one time and she was infested with fleas. They were all over the place. I spent loads of money buying stuff from the local petstore. I bought flea bombs, stuff for the yard, shampoo, et cetera. I ended up having to buy advantage anyway. I put the tube on and saw a huge difference within two hours. I could have saved myself a bundle by just getting the advantage in the first place. About two weeks ago, I was sitting here and a flea jumped on me. I ordered advantage from nofleas.com, got it in three days. I put it on the animals and have not seen one since. I love that stuff.