I drive my boyfriend insane with watering my snakes. They get fresh (purified) water every other day(sometimes everyday if I feel like it) and I scrub their water dishes 2 times a week. Before I bought purified drinking water from the store my snakes would rarely ever drink. I decided that $2.75 wasn't bad for 2.5 gallons of water so I got a huge jug with a spigot for them. So now I just take out their water and put it under the spigot and fill it up! No heavy lifting and no spills which is awesome! Nothing is worse than a stinky snake dish IMO. Would you want to drink out of a stinky water dish? HECK NO! So I have a scrubber and some disinfecting soap I use specifically for them. Snakes remind me of horses in the fact that they don't have to mess in their dish to make it smell really foul. When I started working at a stable the FIRST thing I knew i had to do right away was scrub their water buckets. If you have never smelled a horses stinky bucket you are very lucky. It smells HORRIBLE!! Like rotten eggs/ sulfur! Stinky snake dish doesn't smell like that but it does smell bad if you let it sit. So thats why I water them every other day and scrub dishes twice a week. <_< I do use reptisafe terrarium water conditioner sometimes but with the purified water it isn't really necessary.