Using this Repti Gear Rainforest Reptile Water Dish is super easy. Just place it in your terrarium where your reptile can easily access it. Fill it with fresh water regularly to keep your pet hydrated. As for maintenance, clean the dish every few days to prevent the growth of bacteria. You can use a mild soap and warm water to wash it, then rinse thoroughly. When it comes to the size, pick the one that suits your reptile's needs - small for smaller reptiles, medium for average - sized ones, and large for bigger reptiles. And always make sure the water level is appropriate so your reptile can drink or soak without any problems.