If even the thought of toilet snakes sends chills down your spine, take heart; while it's certainly possible for a snake to end up in your toilet, it's extraordinarily unlikely. Then it'd have to choose to enter the toilet and head for the sewer line. If the snake were to skip your sewer pipe and continue into the sewer main, he'd likely die of exposure [source: Vettel]. Thought of toilet snakes giving you the heebie-jeebies? Invest in a multi-flap, which fits over your toilet pipe and allows water and waste to exit while keeping critters of all shapes and sizes from entering your space.