My cat once stumbled onto a sloth on the floor (the sloth itself in the wrong place never does - he is a decent young man) and decided to clean up. It is unpleasant for him to enter the water. What he did for this: unwrapped the toilet paper, ripped off the piece and carried it to the pit. There, he broke this paper into small pieces and covered the hole with them. The problem is solved - the legs are now dry and comfortable.