No, I don't think so. I would recommend finding the source of bacterial over-growth before messing around, or you could start producing super bacteria, or welcome a candidal oral infection.
Further more, since I discovered that in MY case of bad taste and white tongue is over- production of protective cells and specialized granulocytes [eosinophils], it seems the problem is deeper. It may involve such things as [new] parasites and or viruses. Bacterial build-up is a sign of something out of whack. The bacteria could be attracted to the area because of chemical metabolites being deposited there by certain cells and their by-products, or compounds in saliva. Shroom