How do I keep my dogs water fresh?

Then, how often should I fill my dogs water bowl?

You should wash your dog's food bowl after every meal. You can wash their water bowl less frequently, but you will need to completely empty, sanitize and refill it at least once per week. Water bowls tend to collect a slimy build-up called biofilm, which allows harmful bacteria to take over.

Subsequently, question is, is the algae in the dog's water bowl toxic? Blue-green algae grow and colonize to form “blooms” that give the water a blue-green appearance or a “pea soup” like color. Very small exposures, such a few mouthfuls of algae-contaminated water, may result in fatal poisoning. Dogs that enjoy swimming and playing in lakes and ponds may be exposed to blue-green algae.

Keeping this in view, how do I keep mold out of my dogs water bowl?

To prevent harmful bacteria, wash your dog's food and water bowl each day in hot, soapy water. Be sure to designate one sponge or cloth for the job so you don't accidentally transfer germs to the dishes you and your family use. At least once a week, place the dog bowls in the dishwasher to completely disinfect them.

Should you leave water out for dog all day?

If your dog does not finish his food, pick up the bowl, and do not feed again until the next scheduled time. Leaving food and water out all day is setting your dog up to fail. Allowing constant access to food makes it more difficult to predict when your dog will have to relieve himself.