It is not a good idea to leave food available all the time free choice. It is better to feed one or two meals a day and pick up and wash the dishes when the dog is done to prevent bacteria from building up in the dish. If you are using stainless steel dishes, do not place them near the refrigerator or other large electrical appliances. This is especially true for water dishes as electromagnetic frequencies can be conducted by the steel and be absorbed into the water. Water dishes should also be washed daily, not just refilled to prevent algae build up.
Clients often ask why their pets, usually dogs, drink out of the toilet.
It really grosse a lot of people out. The reason the animals gave me is that every time its flushed the water is changed and its cooler and fresher than the water in their dish. If you have pets it's good not to use chemical cleaners in the toilet that can poison your pet. The animals really appreciate it when you give them fresh cold water several times a day rather than setting out one large bowl that gets refilled only when it's empty. I place the dogs water dishes inside of a larger pan or bowl to catch the water that splashes out when they drink.