Muck Doctor, muck removal, is specifically formulated to reduce muck and sludge around beach areas and docks. Muck Doctor contains concentrated, yet safe bacteria that gets rid of pond muck, dead leaves, odors and other organic material that can hurt the healthy balance of your pond or lake. You and your kids will be able to enjoy the beach area again. If you are looking for an affordable, easy to use pond muck removal option, try Muck Doctor! Spikes are self sinking. Simply toss in areas with muck and let them go to work.