Signs You Have Mice In the Home

In this article, you’ll find out the common signs of a mouse infestation in your home. If you’d like to find out about rats instead, you can find more information in our signs of a rat infestation in your home article.


If you’ve noticed some odd things in your home, there may be a chance you have a few mice living under the same roof. Because these sneaky little critters don’t often show themselves to humans, the best way to determine if this is the case is to get to know mouse infestation signs.


These can include:


  1. Droppings: The most obvious sign of all; if you detect droppings in your home and have no idea where they could have come from, it’s likely they’re from rodents!
  2. Footprints: tracks can often be spotted where mice travel, and be sure to look out for signs of long, sweeping tail prints too. If you suspect you have mice, try sprinkling flour around areas you think they may be and wait for the evidence to appear!
  3. Gnawing: watch out for signs of gnawing on packaged food items, cardboard boxes and around pipes, ducts and vents.
  4. Sounds: listen for signs of scratching, scuffling and gnawing, especially at night when mice can be more active.
  5. Unusual pet activity: are your pets sniffing around areas they wouldn’t normally? Or pawing excitedly at walls, cabinets or the area around the refrigerator? This could be a sign they’ve detected mice.
  6. Burrows: look for unusual holes or lumps in the ground along the outside of your home.

How many mice are in my house?

It can be difficult to tell exactly how many mice are in your house, which could range from a couple to a full-blown infestation. In short – the more signs you see, the more mice there are likely to be. If you actually see a mouse in the flesh, this is usually a sign that there are more nesting in your home.

Does one mouse mean an infestation?

One mouse doesn’t necessarily mean an infestation and it’s possible that you’ve only got a couple living under your roof – for now.


It’s important to remember that a few mice can turn into many due to their high rate of breeding, so if you notice any signs of mouse activity at all, make sure you get on top of the problem quickly with our no-mess Corner Fit Bait Stations.

What do mouse droppings look like?

Mouse droppings are usually around 1/8th” long, oval shaped and black in colour.

What does mouse urine look and smell like?

Mouse urine doesn’t have a particularly strong scent unless it really builds up, in which case a smell of ammonia may be noticeable. This is probably more likely to be around their nests. You can’t see mouse pee either, unless you have a UV light to hand which may show tracks of the urine.

How to tell if you have mice in your walls

The main way of telling if you have mice in your walls is to listen out for scratching and scuffling sounds coming from within them. And of course, all of the other signs apply, like droppings, gnaw marks and unexplained holes.

How to tell if mice are gone

Once you’ve tackled your mouse problem you should know they’re gone simply by monitoring the signs that told you they were there in the first place. Over time you should notice that there are no more droppings, and all scratching sounds should have totally stopped. If you’re using bait stations, look out for signs that they’re working by checking for nibble marks on the actual bait, as well as by sprinkling flour around the station and watching out for footprints.


No one likes to think of having mice in their home but, unfortunately, it’s incredibly common. Read our hub of articles for more top tips and tricks about dealing with rodents in the home, including our article about the mouse’s bigger, scarier friend, ‘signs you have rats in your home’!