Coarse Salt Recommended to Eliminate Drain Odors and Pests in Brazilian Homes

A traditional Portuguese household practice is gaining popularity in Brazil as an inexpensive, chemical‑free method to maintain drain hygiene. Homeowners are advised to pour a generous spoonful of coarse kitchen salt into bathroom and kitchen drains, preferably at night, allowing the regular flow of water to distribute the crystals throughout the plumbing.

The salt’s high sodium chloride content dehydrates bacteria and inhibits their growth, which reduces the production of foul gases that cause unpleasant odors. In addition, the salty environment creates a barrier that deters urban pests such as cockroaches from entering homes through the sewer system. The technique also helps prevent the buildup of grease and organic debris that can lead to pipe blockages, while being safe for PVC pipe materials.

The method requires no special equipment, relies on readily available household salt, and offers ongoing passive cleaning with each use of the sink or shower. Its low cost and simplicity make it an attractive alternative to commercial drain cleaners and harsher chemical disinfectants.