Plumbing P-traps were designed to retain some water after a fixtures use to prevent sewer gases and possible pests from passing from the drain pipes back into the building. With the absence of use, the water in the trap dry out allowing potentially dangerous gases through...Fortunately there is a Simple, Inexpensive & Effective solution called Ever-Prime liquid

 Can be used in floor, sink and shower drains in both residential and commercial applications      Simply Add It...and Forget It!