I was looking at the Petsmart website about food and water dishes for cats. As I have explained earlier, Rascal developed the habit of spilling his water. I used to use a plastic water bowl, but he would grab it with his teeth or move it with his paw and spill it. Then I used a glass measuring cup because it was heavier. He still manages to spill it. I filled it up yesterday morning and when I got home from work, it was knocked over. So I went to the website and found these food and water bowls. Do any of you have them and are they effective?