Possums
Similar to rats, small possums are adept swimmers, can hold their breath for extended periods, and can navigate narrow pipes. Keeping your pipes free of food scraps can deter possums. To clean your toilet pipes effectively, mix equal parts of sugar, water, vinegar, and 5-10 drops of dish soap, and flush it down your toilet. Boiling water can also be an effective deep-cleaning method.
Snakes
Snakes are well-suited for navigating long, thin pipes and are attracted to cool, dark, wet environments. Most snakes found in toilet bowls are harmless, but it’s best not to take any chances. If you find a snake in your toilet, call pest control to handle the situation. Afterward, clean your pipes using the sugar, water, vinegar, and dish soap mixture to remove any food residue and prevent further intrusions.