Began full timing in May in IL. Now in FL for the winter. Recently, noticed gnats coming from the black tank when flushing the toilet. Thank you in advance for any ideas/solutions. May you each have a...
I would plug the vent on the roof and then spray half a can of bug killer into the toilet opening. Let it sit for a while and then use black tank chemicals to help keep them from coming back. Just an idea, YMMV!