Rats in your walls

Like mice, rats tend to get into food packages and containers that can be chewed through, so if you see bite marks on packaging, throw those things out and prepare for the possibility that you might have a rat infestation. Rats are nocturnal creatures, so if you have a problem with them, you’ll probably hear scratching noises more so at night than during the day. Rats also have a tendency to leave urine wherever they travel, and the smell of it can be strong, so if you’re noticing unpleasant odors in addition to hearing scratching noises, you could have a rat problem.