You know how new towels don’t absorb water? It’s because there is some shitty fabric softener on them to make them feel really soft at the store. Wash them once or twice with vinegar (instead of laundry soap) to remove the softener and turn them into proper towels. The same technique should work for your cat.
The Anarchist’s Cookbook is actually legal to possess (and buy and sell). It’s a common misconception that it is illegal. In the US, at least.