Yes, rats often nest in walls, ceilings, and attics where it’s dark, warm, and protected from predators.

The timeline varies, but most infestations are controlled within a week using professional methods.

Ultrasonic devices may deter rats briefly, but they are not a reliable long-term solution.

Exterminators use traps, bait stations, exclusion methods, and inspections to eliminate rats effectively.

One rat may indicate a larger problem. It’s best to call an expert to assess the situation promptly.