Bests & Worsts Reviews from Amazon

Bought these for my girlfriends older kitten/adolescent cat. He absolutely loved playing with them. Suddenly, a few days after Christmas, he wasn't eating or using the litter box, was trying to puke (not hairballs) but nothing would come up, and after a day of that he even stopped drinking water. Brought to a local vet where they do surgery etc and the xrays showed his stomach full. The attached pic is what was pulled out of his stomach. $4000 for emergency stomach surgery for this young cat. He is recovering well, but no pet owner should have to go thru this. The manufacturer should stop selling these balls.