Uh-oh! Get an exterminator and quick. If you're seeing em in the basement, there is either a breach in the foundation that needs to be sealed ASAP where they're coming in and going out, or you have an old house with a dirt floor basement (which is worse), and will need to have the floor filled in.
Either way, with winter moving in, if your house isn't already heavily infested, it will be in a matter of weeks, as rodents reproduce very, very quickly and have many babies at once! They will need warmth and food - ie. your house.
I suspect with holes in the couch, your house is already pretty full of them. I lived in one house like this, and it was a horror movie. The buggers destroyed all of my furniture (upholstered AND wooden!) and got into the cupboards, pantry, food, ate clothing in dressers which they bore holes in, and so on. It was an all out war.
The house was an old Victorian that was being remodeled and for us, the dirt floor basement was their point of entry. We had to have a cement floor put in, but until that was possible, the house was teeming with critters. Poop and pee was everywhere and at night, they got so bad they terrorized my then Border Collie to the point she needed anxiety meds.
The dog absolutely refused to sleep on the floor and wouldn't sleep at night...but instead patrolled the house barking hysterically at them as they ran all over.
The house was gorgeous - a PBS home improvement show dream, but I was never so happy to get out of that "hellish-mouse-hole!" By the time we sold the place, we put tons of money, I mean tons into rodent control. I don't think we totally got rid of them, but they were greatly controlled by then. Unfortunately, or maybe fortunately, we had to get rid of most of the furniture before moving. The exterminator warned that short of poisoning the furniture (with a rodent bomb) or having it gutted and reupholstered, we'd probably be bringing friends with us to our new house. So gladly, we got rid of pretty much everything and anything. :P
UPDATE:
I forgot to add that you can check yourself to see how bad the problem is. Place trays of poison near water sources, such as pipes under your kitchen and bathroom sinks, near trash cans, pantries, anywhere they would go for food and water...anywhere you see their poop trails (looks like black rice). If it gets totally eaten or dragged to a new location, you'll know how bad the problem and where they might be congregating. If you set up traps, and hear several go off at night, you'll know there are alot. Sometimes during the day, if you tear off/remove sheet rock near water pipes such as in the basement or bathroom for instance, you'll find active nests nearby.
Sometimes at night, you can hear them chattering and scampering in the walls. Also near vents if you have an older heating system.