I found these weird dirt tunnels running up the support beams in my basement. I poked one and it crumbled, but it looks like they go all the way to the subfloor. Is this serious?

mulch, and other cellulose materials away from your home’s foundation.

Regularly inspect your home for signs of termite activity and consider scheduling annual professional inspections to catch any potential infestations early. Installing physical barriers and using termite-resistant building materials during renovations can also provide long-term protection against termites.