Eliminate gnats from drains when cleaning.

How to Get Rid of Gnat-Like Bugs Coming out of the Overflow Hole of a Bathroom Sink

by Kim Blakesley

Gnats are annoying little insects that like warm, moist climates and locations. They are most commonly brought into your home on food items but may find their way in if you are having a very warm and moist summer. Locations such as sink drains, garbage disposals and overflow holes are ideal locations for these pesky little creatures. Eliminating these unwanted house guests is very simple using a common household item -- bleach.

Fill a turkey baster with bleach.

Insert the end of the baster in the overflow hole.

Squeeze the bleach into the hole until the baster is empty.

Plug the hole with a rag for one hour. Close the drain to help keep the fumes within the pipes to kill any gnat-like bugs that may be breeding in that area.

Items you will need

  • Bleach
  • Turkey baster


  • Wash the turkey baster thoroughly before using it for any other purpose.


  • Bleach may cause irritation to the skin or eyes and is harmful if swallowed. Wear gloves is you are working with bleach for a prolonged period of time. Use in a well-ventilated area; void breathing the vapors. Wash your hands immediately after use. Keep the bleach out of your children's reach.

About the Author

Kim Blakesley is a home remodeling business owner, former art/business teacher and school principal. She began her writing and photography career in 2008. Blakesley's education, fine arts, remodeling, green living, and arts and crafts articles have appeared on numerous websites, including DeWalt Tools, as well as in "Farm Journal" and "Pro Farmer."

Photo Credits

  • Jupiterimages/Pixland/Getty Images