How do you stop otters from pooping in your boathouse?

To deter otters from pooping in your boathouse, you can start by sealing any entry points to prevent them from accessing the area. Additionally, consider using repellents such as citrus scents or commercial wildlife deterrents, as otters are sensitive to strong odors. Installing motion-activated lights or noise devices can also help scare them away. Lastly, keeping the area clean and free of food sources will make it less attractive to them.