Bought these for my mastiff and frenchie as a bit of entertainment. The frenchie had it clean within about 20 minutes and the mastiff is just to lazy to put lots of effort it, so didn't get his clean the frenchie finished that off too.
My pair love it with peanut butter but it's good for anything you can smother on and is dog friendly of course.
Sticks to my vinyl tiles so doesn't move and get pushed under your feet constantly, not too big nor too small, just the right size.
If your like me and sometimes you just need 10 minutes time out because the daytime antics have worn you out ???? then these give you that and I would definitely recommend.