Since balls seem to disappear much like socks in the washing machine, I was immediately attracted to these because of the price...three for $10.00. I liked the colors and the varying shapes on the surface of the ball were attractive (although I will admit that I was puzzled as to why the pink balls in a set of three were more expensive). The description of their resistance to aggressive chewers was worth a gamble as well. So, why not? Why not, was because of the squeakers. I was not fond of the idea of squeaking toys, however the ad stated that the squeaker could be disabled quite easily. So, I ventured into the unknown and ordered the balls. They arrived quickly and were an immediate hit. The only problem was, now our dog had to decide which one he wanted. I took matters into my own hands and punched the squeaker device into the ball with a wooden skewer. But alas, when he chews down on the ball and air is expelled, a bit of a squeak still escapes. He carries one of the balls around almost all the time, and he even tries to sneak it into his bed in our bedroom at nighttime. When one of the balls gets away from him, he comes and gets me to retrieve it from under a cupboard, behind the toilet, or where ever it has escaped his grasp. He is an avid chewer but has not chewed through or even punctured one of these balls. He does not seem to favor one over the other, but if one of us picks up one of the balls, he quickly drops his for ours. On rainy days these balls have been a big help. They can be rolled for him to chase and retrieve; they stay on the path without veering thither and yon. My husband will sneak and bounce the balls in the house for the dog to catch, and they do not go haywire on the bounce but remain on the appropriate trajectory. All in all, this was a most worthy $10.00 investment in my dog's entertainment and happiness. He has enjoyed them so much, that I am planning to give a set to my "niece dog" for Christmas and will order an extra set for our dog because as we all know, balls are like socks in a washing machine!Two months later: These three little balls have been our dog's best friends. He carries one in his mouth almost constantly. He has not destroyed them, but he has punctured them. Also the tops (yes, I know it is round and has no top or bottom, but two areas are circular and appear to have been added or somehow molded differently to attach to the ball) of the balls have begun to separate from the body. This has not precluded play, but does interfere with the bounce quality. Over the past two months these balls have been an unending source of entertainment for not only our dog but also us. On rainy days we have been able to roll the ball inside and bounce it gingerly for playtime and more importantly to expend energy. since he hates the rain. Even though I have ordered a different set of balls, these still do their job although now, they are his outside balls instead of inside.Top 3 Likes:-Soft yet durable, brightly colored, squeaker can be disabled-Surface indentations facilitate teeth cleaning-Bounce true to trajectory unless pierced by teethTop 3 Dislikes:-The teeth cleaning indentations also harbor thick, dog slobber-The end sections seem to be pieced together and may become separated from the mid-section-Squeaker is loud