The best thing to clean with its actually just hot water. Of course you'll have to take him out.

Unless your frogs are sick, you don't have to worry about decontaminating the tanks. In the case of illness, it's much different.

Very gently scoop him into a nice safe plastic container that is dark so he feels safe. Then go ahead and clean his home. Replace him when done.

This is a great time to give him a little soak. Put his water bowl right into the plastic container with him with some nice 80'F dechlorinated water and he'll relax in his bowl while you clean.

Nice hydrated frog! Clean house to move back into .