How serious of a problem are carpet beetles?
I recently moved into a new apartment with my friend and a couple days ago my friend found a carpet beetle larva in her bath mat, then in the carpeting of her room the next day, and has found a couple more since then despite vacuuming her entire room each time she finds any (I only saw the first two and one other so I have no idea how many she’s actually seen). Our apartment only has carpeting in the bedrooms which are separated by a hallway so I haven’t seen any in my room yet. However, my roommate has been pretty freaked out about this so she’s moving out next week even though we’ve literally only been here a week. We’re both students and this is our first ever apartment so I’m a bit frustrated about this situation since it kind of forces me to move out too but that’s besides the point.
Basically I want to better understand how serious carpet beetles actually are because I don’t think it’s really that big a deal, but at the same time, I’m not the one being affected by them (yet).
Some extra info: from what I know the apartment was not lived in for around a year before we moved in, we were told that it was professionally cleaned but we’re a little skeptical of this (😆), we’ve only seen larva so far, and this is in Ontario.
Sorry for the rant and I’m not sure if this really fits here but idk where else it would.