The extra pet bowls are working great, producing perfect frustra of ice that will last for hours in the cats’ water dish.
That’s why cats love toilet water, it is already chilled. One of our kitties would stand on her hind legs and dip a paw into the toilet then lick her paw. I learned also to put a lid on the water I kept on my night stand as I heard her one night helping herself to my water. 