Caddisflies live only a few days after they hatch, so hopefully this problem will be short-lived. They’re attracted to light so at night you may want to pull curtains or switch off outside lights when people are going in and out.

See this page:

https://yardandgarden.extension.iastate.edu/article/2012/5-16/caddisflies.html

Here are other suggestions I found on the web:

• Replace white light bulbs with yellow lights that attract fewer insects
• Caddisflies seek shade, so they are attracted to vegetation in your yard and to your patio; reduce the amount of vegetation near your home and consider screening your patio
• Caddisflies are not strong fliers, so a fan on a “high” setting may keep them away from certain areas
• Bug zappers may attract caddisflies away from "sitting areas," but may also attract more caddisflies to your yard.
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  Hope this helps. Good luck.