I wish i could give this thing 6 or 7 or 8 stars! The chuckits are absolutely life saving. I have three border collies, THREE incredibly energetic and destructive little devils. They will destroy anything within sight unless i wear them out. Playing/walking with them for 3 hours a day isn't an option and I own an auto repair shop with 10 acres of land so having my customers play with the dogs with the chuckit has been a life changing thing. They play with the dogs and have a good time at our shop, our dogs get their exercise and when we go home they lay down and calm down for the night. its perfect!