Ive had my frog for a couple of months now and ive never kept any type of trog or toad before, and everything is new to me!
Yesterday i found LOADS little white mites in his water bowl. Im guessing they are mites? I cleaned the water bowl out and today there are still a few in there but no where near as many! My frog seems fine and hes eating more than enough.

What should i do about these white things? Where did they come from and why? Are they harmful to my frog? Should i clean him out or treat it with something? Is it to wet or to dry?

PLEASE HELP!!