Yes, you can bathe or soak your iguana. Some owners have trained their iguana to poop in the water, allowing them to bathe and release their waste in a small plastic tub. It is also important that you separate their drinking water and bathing water into two different containers. Iguanas are great swimmers and like to seek homes near water. They need water to survive and a shallow dish should always be available to them in their enclosure. However, it is important that you change their soaking water often and do not put too much water, keeping it shallow at about their chest is good. You also cannot let the water get cold as they are sensitive to temperature changes and will not be able to move. Do not use any soaps or products on them. Just plain water should be fine. Occasional soaks can be enjoyable for your pet lizard and will also help them shed if any stubborn pieces aren't coming off as easily. The most important part is to keep track of temperatures, keeping the levels just enough for them to soak, and not using any soaps on them.