RV macerator pumps and macerator toilets work very similarly, however, macerator toilets tend to be set in a fixed position and use a holding tank instead of a hose to properly dispose of waste collected. A Macerator toilet kit grinds up waste before transferring it into a holding tank, once the holding tank is full you can dispose of the collected waste via a service door located on the holding tank. With a macerator pump, there is no holding tank for waste water, however. You CAN attach your macerator pump to your existing holding tank if you need to dispose of waste. RV macerator pumps are stand-alone units that allow you to increase the distance and method used for disposing of your wastewater.