I decided to trial many toys to find one my mastiff really liked and was durable enough to last longer than a day. Then I got enough to put one in every room of the house. This way he has a chewing outlet wherever he decides to lay down. I only had to do this while training, but I still keep a few around at all times now. To limit expense, I recommend looking in the discount items after a holiday and buying backups. Most of mine are red and green from the after Christmas sales.