Elemonate Gray Water Tablets - Use these tablets to freshen your sink and drain lines and to eliminate odors. These quick-dissolve tablets use the same odor control formula found in Porta-Pak Holding Tank Deodorizer plus enzymes that dissolve grease in the grey water tank and drain lines. Their triple action formulation deodorizes your grey tank, freshens sink and drain lines and dissolves grease and organic sludge. Use in the kitchen and bathroom sinks and shower drains, continued use keeps tank and lines free-flowing and odor free. They are easy to use, just drop in the tablet and run water a few seconds until it is dissolved. Fresh Lemon Scent. 5 Tablets per package.