"I have a Lab, Pom and Yorkie who all love to chase balls. The best thing for me is, with this, I no longer have to touch the soaking wet ball full of dog drool. Not to mention, it tires them out, not me, as a women, I can't throw that far, this will really send the ball flying! After 20 min. of chasing their balls around the yard, they are ready for a break. If you dog loves to play fetch, you need this. Also I have found it works on tennis and rubber balls as long as it is the same size as a tennis ball."