It entertains my dog
Once filled with treats it really does entertain my dog. He chases it around the floor. However, he also likes chewing it and it survived whole for several weeks. He decided that he prefers chewing it. He is a very strong chewer and weighs around 35 kg so it hasn't survived. it ends up as small pieces of plastic around an inch long at the most. They are not sharp and haven't injured my dog at all.I have bought a new one as it kept him entertained for a couple of months.