Food & Water Bowls
I prefer stainless steel food and water bowls since they are easy to clean. Glass is also easy to clean but there is always the chance of it breaking. Plastic, stoneware or ceramic bowls can scratch and the crevices can harbor bacteria.
Foreign-made ceramics can contain high levels of lead that can leach, and plastic, and aluminum bowls can also leach and contaminate bowls. Wash the food and water bowls regularly to remove the biofilm from saliva that can harbor salmonella in the bowls.
Cleaning dog bowls
 Dr. Earl Mindell’s Nutrition And Health For Dogs Earl Mindell, R.Ph., Ph.D. and Elizabeth Renaghan
 DOG Watch Vol. 16, No. 10 October 2012 The Environment’s Impact on Nutrition