What are Caddisflies – Are They Dangerous?

What are Caddisflies

Any lover of lakes and wildlife has likely come into contact with many different insects and species before, especially the caddisfly.

The caddisfly is a general term describing over 1,200 species of fly-like moths that call lakes and freshwater areas home.

You might commonly mistake them for moths (or a similar aquatic insect or creature), whereas in real life they’re an entirely independent species.

However, when all these insects are flying at you it can be hard to distinguish between bugs and their potential damage to you.

Thankfully, caddisflies are not dangerous to humans.

Although not considered harmful, their biggest threat is their tendency to swarm around lights and other bright surfaces, and it’s less of a threat than just general annoying quality.

Moreover, they don’t cause any property damage and they don’t breed or develop inside structures or buildings, so you can be confident that you won’t end up with a caddisfly colony in your basement.

What Are Caddisflies?

We know that caddisflies are insects, but their exact classification is as a Trichoptera, a unique pseudo-fly/moth species that live on the land.

They look unique due to their minimized mouth and compound eyes.

They like to live near freshwater sources because they reproduce in the water, but the actual insects typically exist on land.

They’re a huge part of many aquatic ecosystems, and many scientists generally look towards them as a sign that an ecosystem is healthy and functioning properly.

Each caddisfly feeds on fallen leaves and debris inside bodies of water: the dead leaves and other items that typically float on top of lakes or rivers.

They’re also a major source of food for other predators like frogs or other animals, helping to balance out the food chain in local ecosystems as well.

You’re most likely to see caddisflies at night swarming lights similarly to moths.

How Do I Get Rid of Caddisflies in My Home?

Caddisflies don’t breed inside homes, but if they get trapped inside through an open window or similar entry, they may become a nuisance that’s hard to remove.

One of the best ways to treat caddisflies is simply to be patient and let them die out: caddisflies only live a few days after they become fully-fledged adults.

However, if the swarm becomes bothersome or you simply don’t want to deal with the idea of insects in your home, you can use a chemical insecticide spray to try and remove them.

Most major brands offer good quality, non-toxic sprays to help treat them.

You can also burn citronella candles or diffuse citronella oil to try and treat the infestation.

As far as cleaning up caddisfly remains, a high-strength vacuum cleaner will be enough to remove even the most stubborn of caddisfly colonies.

Preventing caddisflies is much easier and better.

You can prevent swarms from gathering by turning off outdoor lights or by turning to alternative lighting solutions like sodium vapor that don’t attract as many bugs.

During caddisfly season this will most probably help prevent them swarming your porch or home.

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