Other campaigns have focused on chewing gum litter, littering from vehicles and encouraging responsible dog ownership to address dog fouling.
Mae ymgyrchoedd eraill wedi canolbwyntio ar sbwriel gwm cnoi, taflu sbwriel o gerbydau ac annog perchnogaeth cŵn gyfrifol er mwyn mynd i'r afael â baw cŵn.