I use scrambled eggs in this, it has worked great for my dog to get him to drive to the weaves. However they are pretty fragile. I have three and one does not work at all, one works sporadically, and the third works fine and has been for about a year. I am ordering another one to have as backup since I do depend on them, I just wish they were not so easily broken. I do want to mention my dog is a 7 lb papillon so he is not rough with it, it is just transporting it back and forth from class that seems to do them in.