i NEED HELP TO KNOW HOW TO GET RID OF ALL THE YUCKY FLIES HANGING OUT WHERE WE ARE FEEDING 4 OR 5 FERAL CATS…MY BOSSES DAUGHTER PURCHASED SEVERAL CLOSED IN FLY KILLER TRAPS, (fLIES ARE DROWNED AS THEY PENETRATE THE OPENING AT THE TOP)…. THAT IS PUT ABOUT 4-5 YARDS AWAY FROM THE FOOD…IT SEEMS TO WORK, SOMEWHAT, BUT NOW WE ARE “OVERRUN” BY FLIES ANYWAY…PLEASE HELP!!