To remove the worms, the pipes will have to be cleaned. Spray a liberal amount of aerosol insecticide for flies in the rooms where you have seen the worms. Use a flat-head screwdriver to pry off the drain cover where you see the worms. Fill a bucket with hot water.Click to see full answer. Also, why do I have little worms in my shower? Drain Flies, Explained Drain flies prefer the damp, slimy environment inside the pipes of sink, shower and tub drains. Their larvae look a bit like tiny, skinny worms. In some instances, these wormy larvae may be noticed in a toilet tank or in stagnant water pooling in the bottom of a seldom-used shower or sink.Additionally, are drain worms harmful? Drain flies are not dangerous to humans or cause structural damage, but they become a nuisance in large quantities. Even though these pests eat sewage, they are not known to transmit any harmful bacteria. There have been some instances where asthma as been triggered by people who inhaled drain fly body parts. Accordingly, what causes drain worms? Cause. Because drain fly larvae live in and feed on organic debris, they often are found in the slimy film around drains and traps in the bathroom. They are drawn to moist areas frequented by humans.How do I get rid of worms in my bathroom permanently?Make it a point to clean the drainage once a week to keep it free from such larvae and worms. 2. After basic cleaning, you can use household cleaners such as borax and bleach to get rid of the eggs or larvae and worms. You can also use baking soda or vinegar to flush the drainage to remove any eggs in it.