Are they making self-destructive ping pong balls now to make you buy more? Over the last month I have bought 3 x 6 packs of them as the cats adore them, and we are down to two after a thorough search of the house! Even the kits have been looking for their toys, behind the cooker, under the sofas, among the plants. You would think white and orange ping pong balls would show up, but I am stumped. They have gone wherever lost socks go. Does anyone else have this problem?