Small Red Worms in the Shower

Share the knowledge

A reader wrote to us recently about worms he found in his shower. The worms are really thin and are of a reddish hue, and they are about two inches long, more or less. With these characteristics taken together, the reader reports that these worms look like particularly small and thin earthworms, just like the ones you see outside after it rains. What are these worms?

Unfortunately, these worms could be a number of different things, some of which aren’t even worms at all. Below we have listed a few possibilities:

To help describe the worms, the reader actually pointed to a previous article on All About Worms that describes small worms you might find in your bathroom, so let’s list these first, just in case these are in fact the creatures that our reader found. The first is the larvae of moth flies, which are often found around drains, including shower drains. Although often found in the area described by the reader, these larvae tend to be very small (less than a forth of an inch in length), and thus considerably smaller than the reader’s worms. Moth fly larvae also tend to be a dark grayish color, not red. The other “worms” covered in this article are carpet beetle larvae. These larvae can be found all over one’s house, including the shower. Again, though, carpet beetle larvae don’t precisely meet the description found in our reader’s question, as these larvae tend to be a brownish color with pale strips along their bodies.

While we’re on the topic of larvae, we should mention the midge fly larvae (often called “blood worms”), 2000 species of which can be found all over North America in aquatic settings. For the most part, people report seeing midge fly larvae in pools, but presumably they could be found in a shower, especially if there is stagnant water accumulated. Midge fly larvae are often red, but they don’t grow to over half an inch in length. So, alas, these larvae also don’t perfectly match the worms (or whatever the case may be) that our reader is confronting. However, given the prevalence of blood worms, they are definitely worth considering.

The reader should consider two additional possibilities: pinworms and horsehair worms. Pinworms afflict humans, causing irritation around the lower intestine and anus area, where they can be observed with the naked eye. During a shower, an infected person might be able to scrub a few of these pinworms off, which would explain why they are in the shower. Like all the other creatures described, though, pinworms are very small, usually under a half of an inch (they also tend to be white), but they are very thin. Horsehair worms, which infect certain types of insects and are found in water, are also extremely thin. However, these worms don’t match the reader’s description for the opposite reason that all the others don’t: they are often considerably longer than two inches; in fact, they can grow to be as long as a foot. Horsehair worms come in several different colors, ranging from an off-white to black.

Regrettably, all of the worms described above are imperfect matches to our reader’s question. On the other hand, all of the worms (and larvae) listed above seem to be the prime candidates, so we would encourage our reader to closely research each to see if one of them actually matches up with the worms that he is observing.


All About Worms is always free, always reader-supported. Your tips via CashApp, Venmo, or Paypal are appreciated! Receipts will come from ISIPP Publishing.

CashApp us Square Cash app link

Venmo us Venmo link

Paypal us Paypal link

Note: Some links on this site are partner links. That means that we earn a tiny bit if you purchase something through them, at no extra charge to you. This helps offset the cost of keeping this resource free for everybody (it doesn't cover our costs, but every little bit helps! :~) )

Share the knowledge

6 thoughts on “Small Red Worms in the Shower

  1. Thin, red worms in the cat’s water bowl (outside on back porch) were my surprise. They couldn’t have been more than an inch long. I was looking for answers when I found this page.

  2. I have found some red thin worms on my shower tray in my shower too.
    I dunno where are they coming from and how to get rid of them.
    Please advise.
    Many thanks.

  3. I have found two of these worms in my shower two different times. They are very thin red color and when rolled over the underside is a pinkish color. I don’t know where they are coming from or how to get rid of them.

  4. well, i find some in my bathroom too … it’s natural cause there are two different ways to find them :
    1st – if some one building near your house cause it’s eggs exist in red bricks
    2nd – it’s sewage worms … you will find it in whatever damp places in ur bathroom, sometime it comes from ur sink , near ur toilet or any moist place .
    so, try to clean ur bathroom with dettol n maybe dry ur shower
    (sorry for my bad english .. after all am not native speaker ^_^)

  5. I found a (one only) red thin small~1″ with antennas on my bedroom ceiling! It raised its head as I grabbed it with a tissue and flushed in down the toilet. What can it be and how did it get on my bedroom ceiling? Pls help me. Thank you, in advance.

  6. Ever since we had a blizzard last month, several times since I have sporadically found a tiny brownish colored worm in my shower. Two times they were on a damp wash cloth. They are only about a quarter to half inch long. I’m trying to figure out where they are coming from. I have photos and a video I can show you. Do you have an email where I can send the photos and video to?

Leave a Reply

Your email address will not be published. Required fields are marked *