In winter or dry climates, P-traps can evaporate in less than one month, so be sure to pour water into the drains or toilets every few weeks. If the smell is particularly bothersome, you can also add one cup of vinegar or bleach, which will also remove any insects that can enter the P-trap after it runs dry.Jul 12, 2021,
A strong sewer smell coming from your basement is most often caused from a dried out floor drain, a bad ejector pit seal, improperly vented appliances or fixtures, or even a damaged sewer line. Floor Drains – Rarely-used floor drains in your basement are typically the source of the sewer stench.Mar 22, 2019
Floor drains, much like the drains underneath your interior sinks, have a u-shaped pipe underneath them, called a P-trap. A P-trap serves a few different purposes, but the most important one for your floor drains is to create a water barrier so as to prevent drain odors, or insect issues from the adjacent sewer system.
Pour a gallon of hot, boiling water down any drains that are rarely used, such as the basement drain or guest bathroom shower. This should help eliminate odors caused by dry traps.Jul 29, 2016
Baking soda and vinegar Start by pouring ¼ cup of baking soda down the drain, and then leave it for about 10 minutes. Then, follow it with one cup of vinegar. Let the mixture fizzle and work for a few minutes, and then finish by turning on the water and running the disposal to clear out any leftover food waste.