Hi All, I have always used a nipple watered in the warm months but switch to fortex bowls in the winter so I can dump and smash the ice out. They are always filthy and a pain to clean. This year, due to surgery I had, my husband had to take over animal care. In an effort to make it easier for him I bought small de-icers. They work great but still have the filthy water issue. Do you think it could go back to the nipple watered with the de-icer in it or would the water in the nipple portion freeze? Any thoughts?