Rats! We might have mice!

7 Signs You Have a Rodent Infestation

One of the worst fears for homeowners is playing host to a family of rats or mice.

Once they’ve moved in, it’s unlikely you’ll see one with your own eyes. Instead, there are a number of tell tale signs that you have some small, whiskered guests taking up residence in a dark, warm space in your home.


The first sign of a rodent infestation is usually spotting the droppings they leave behind. Their droppings are small, dark pellets, usually about 3-8mm in length. There are certain places of high activity you can look for these, usually along walls, inside cupboards and under sinks and ovens.

Signs of Chewing

Rats and mice have sets of teeth that NEVER stop growing. This means they have to grind those chompers down on whatever they can get their paws on, including your furniture. If you spot any marks on the feet of your chairs or sofas, take a closer look.

Of course, the other thing they do with those teeth is eat. If you find holes chewed through the boxes and packets in your pantry, that’s a sure sign of infestation. Rodents have also been known to chew through plastic containers to get to food sources. Make sure you store your food in good quality containers to avoid your unwanted guests helping themselves.


Rodents will urinate frequently. It doesn’t help that their urine has a strong ammonia smell to it. The smell becomes especially strong in enclosed spaces and can even linger for a time after all rodents have been removed.

Unusual Noises

Mice will usually make their home within your walls or under floorboards. They are most active at night, so keep an ear out for the scratching and skittering noises they make as they run through your house.

Strange Pet Behaviour

Long before you might notice, your pets will likely pick up on the fact that your home has a few more animals running around. If your pet has begun whining or barking at things that seemingly aren't there, or scratching at your walls or cupboards, then odds are they are trying to get their paws on a rodent in hiding. Our pets have much better senses of hearing and smell than us humans and, as such, can act as early alarms systems for rodent activity.


Dusty areas (such as unused rooms, attics, lofts and garages) can show rodent activity through the tracks they leave. Check not just for footprints, but also tail marks.

Areas that don’t have dust for them to trail through can be checked by shining a bright torch at an angle, to see if the light catches any smudges or paw prints.

You can also check for active rodent activity by sprinkling flour or some other form of powder along the sides of your walls or wherever else you think there may be rodent activity. Check the next day for tracks.


Mice will make their nests from easily shreddable material such as paper and fabric. Check for these nests within wall cavities, ceilings, under floorboards, stoves and behind fridges. Also, check for any holes they may have chewed through your walls to gain access.

Think mice or rats night be a problem at your home? Get in touch with the team at CDI Pest Management today to book in an inspection ‘ cause the sooner we’re in your house, the sooner the rodents can be out of it.