Well to get the betta out I use the cup that they came from the pet-store in but my betta Tiki has recently out grown this so I use clear plastic drinking cups to get him out and that works well and he sits in the cup and watches me clean the tank. If your betta can live with this mold on the side of its house I'm sure it will be fine for you to touch so no worries there, but yes, the plastic cup works fine. :P Hope it helps!