Why Are There Worms In My Bathroom?


If you spot tiny black worms in your toilet, they are probably drain fly larvae. These pests live off of sewage and decaying matter, which makes your toilet a perfect location for them. Adult females lay large clusters of eggs, which explains why there may be more than one worm in your toilet.


Cause Worms Appear in the Bathroom

  1. Water Conditions. Worms are less likely to appear in bathrooms with tap water than in bathrooms that use groundwater…
  2. Drainage Conditions. Worms not only enter from drains, but can also enter from sewers that drain outside the house.
  3. Bathroom Surface Condition. The more soil surface exposure in the bathroom, the easier it…

There’s WORMS in my bath!!

Frequently Asked Questions

Why do I have little worms in my shower?

Showers are warm and damp, which creates the perfect breeding ground for mold and drain flies. Drain flies will lay their eggs inside the drain or on your shower floor. When these eggs hatch, the larvae look like tiny black worms.

Does bleach kill drain worms?

While this chemical might get rid of some larvae, bleach passes quickly down the drain and does not penetrate the thick build-up where eggs are deposited by the female drain fly and larvae live.

Why do I have worms in my toilet?

The appearance of these worms in toilet typically means you have a cracked sewer pipe. The cracks on the pipe serve as an entrance that earthworms go through. The appearance of earthworms doesn’t have to indicate that the bathroom is dirty, even though they look gross.

Where are the worms in the bathroom sink?

The larvae of moth flies like to hang around drains, within drains, underneath drain plugs and screens, and inside of pipes. They feed on the gelatinous film found in these areas of bathroom sinks, tubs, and toilets and well as kitchen sinks. UPDATE! All About Worms has partnered with HealthLabs so that no doctor's visit required!

What to do if you have worms in your bathroom?

You should screen windows and doors and reduce moisture and organic debris. To keep moth flies from multiplying, fix leaking plumbing immediately. You should also clean muck that collects in drains or under dripping taps, and brush or wash away slime under drain plugs, screens, and inside the top of drainpipes, above the water level in the J-trap.

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