Sewage and other debris tend to accumulate in main lines leading to both sewers and septic tanks. This can occur in both in old and new homes and can be exacerbated by water saving or low flow toilets that’s often do a poor job of moving waste out of sewage lines. This can lead to build-up which can result in clogs, messy back-ups and odors. Drain & Pipe Oxy-tabs provide oxygen, adds enzymes that encourage the breakdown of household debris, waste, organic solids, fats and grease in both the sewer and main lines to remove the build-up and restore the flow. It also eliminates unpleasant odors. OXY-TAB technology does 3 things: 1) Eliminates odors, 2) Formula bubbles and fizzes to cover all pipe walls, 3) Is environmentally friendly, non-hazardous and biodegradable. Dissolves in water for easy application.