I use a reptile safe disinfecting antibacterial solution called chlorohexidine. The mixture is about 1 table spoon per gallon of water so it goes a very long way and is completly safe for your snakes and such. Being that soap is toxic to snakes i researched and found this to be the best alturnative. I use that with some paper towels, spray the whole tank down after its completly enptied out, wipe clean and thats about it!