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A rodent infestation often has a distinctive, unpleasant smell. The most common odor is a strong, musky scent, similar to stale ammonia, which comes from mouse urine. As the infestation grows, the smell can become more intense. You might also notice a foul, decomposing odor if mice or rats die inside the walls or hidden areas. This combination of smells is a clear sign of a rodent problem and should prompt immediate action to address the infestation.

One of the best ways to get rid of mice is to prevent them from showing up in the first place with smart tricks—like placing a deterrent around the foundation of your house. Try building a barrier of rocks to make it harder for such rodents to get cozy in the small corners and crawl spaces that might give them access to the interior.

Yes, there’s a chance you will still see fleas after bombing since it takes about 24 hours for fleas to die off. If your infestation is severe or fleas are hiding in inaccessible areas, you’re even more likely to see a few remaining stragglers inside your home. If this is the case, you may want to contact your exterminator and see what your options are for removal or treatment.

To determine if you have a rat or mouse infestation, look for several key differences. The most obvious is the size of the rodent: rats are significantly larger with thicker bodies, while mice are much smaller and more slender. You can also identify them by their droppings; rat droppings are larger and rounder, about the size of a raisin, while mouse droppings are smaller, like a grain of rice, and often have pointed ends. Other signs include the sounds they make, as rats produce louder scratching and gnawing noises due to their size. Behaviorally, rats tend to be more cautious, whereas mice are more curious and might be seen more often. Additionally, rat nests are typically larger than those of mice. If you are unable to see the pest or find clear evidence, a professional inspection can provide a definitive identification.