Change out the substrate and replace it with clean dirt substrate (the one that comes in a brick). By the way, its actually ground coconut shell, not dirt. It would be a good idea to cover the substrate with leaf litter to prevent the frog from tracking it all over the place. You can get live oak leaves from Jim O or Josh's Frogs. Live oak doesn't break down as quickly as other leaves do.
PS what's an agtf? Abrieviating can lead to confusion, so please refrain from it as much as possible. Thanks.