Here's what I do: Firstly, have the waterer off the ground so turds don't get tracked into the water. That alone helps immensely. Next, I pick up my waterer, take it to the mud room sink (not the kitchen sink where you could pass alone salmonella) and I dump all old water out. I then rinse the unit inside and out with hot water briefly. I then grab my handy dandy water sprayer bottle which is filled with undiluted household bleach. I turn the faucet off, dump out all water, and then mist the waterer with bleach. I give it a few seconds and then start a little hot water on it and begin swishing it around in a circle. This only takes a few seconds. I then thoroughly rinse and fill the waterer with fresh water. I've done this with 3 old chicks on up. It takes seconds, and you have the peace of mind of knowing that waterer is safe.