Tibbe has small stainless steel heavy bowls with a rubber ring on the outside bottom to keep them from moving around. I think I heard other materials can develope small pores, cracks or something and hold dirt and bacteria in them.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |