We have two 12 year old cats and there is not much you can do to get them to play. This is one thing that works. I got tired of buying catnip mice for the cats and then they would only play with them a week and never touch them again. Solution: Refillable catnip toys! These are great. The toys come with packs of catnip and you just stuff the pack into an opening on the toy and close the velcro. I’ve found that when you run out of the packs of catnip you can pour loose into the toy and close it. The chili pepper is our house favorite. The toys are called Petlinks System MouseFull Refillable Catnip Toy and cost around $5 each.