Introducing Muck Doctor09/29/2010Muck Doctor is a box of highly concentrated bacteria in the form of spikes. 1 box contains 10 spikes that will cover approximately 250 square feet. The bacteria is specialized to consume sludge and muck on the pond floor or around beach and dock areas at lake front properties. When dropped into the water, the spike will insert itself into the muck. Muck Doctor performs best in water temperatures above 60F.