If you're finding tiny droppings in the pantry, nibbled packets or shredded paper in a drawer, you most likely have house mice, and the way to clear them is to find where they're nesting and how they're getting in, then trap and bait in the right spots. Mice breed fast, so it pays to deal with them early.
Where mice hide in Waterkloof homes
Larger houses mean more hiding places. These are the spots we check most often here:
- Garages and storerooms full of boxes, sports gear, garden furniture cushions and bags of dog food or bird seed
- Pantries and scullery cupboards, especially behind and under built-in units
- Kick-spaces under kitchen cabinets, warm and undisturbed
- Wall cavities and ceiling voids in older homes
- Garden cottages and staff rooms, which are often closed up for periods
- Behind appliances, where motors stay warm
Older doors and frames are the usual way in. Gaps under wooden garage doors, worn weather strips, holes where pipes and cables run through walls, and spaces at the base of old sliding doors all let a mouse inside.
Why it gets worse in winter
When Highveld nights turn cold in late autumn, mice that were living along hedges and in the garden look for warmth. A house with a big garage, a pantry stocked for a household and a warm kitchen is ideal. Many of our Waterkloof mouse calls begin around May and carry on through the cold months.
Signs of mice
Small dark droppings about the size of a grain of rice are the clearest sign. You may also notice a musty smell in cupboards, chewed corners on cereal boxes and bags, shredded paper or fabric for nests, light scratching in walls in the evening, or pets fixated on one cupboard.
What we do
1. Find the nest and the entry
We look for droppings, runs and gnawing, and check doors, vents, pipe entries and the garage.
2. Trap and bait
Indoors we generally use traps placed along walls and in cupboards where mice run. In garages, storerooms and outbuildings we use lockable bait stations that pets and children can't open. Tracking powder in voids helps us see where they travel.
3. Proof
We show you what to seal: door sweeps, steel wool and filler around pipe holes, mesh over vents. Mice will find any gap you leave, so this step matters.
4. Follow up
We check traps and stations until the activity stops.
What people get wrong
Leaving food accessible while trying to trap. Mice won't bother with a trap when there's an open bag of dog pellets or bird seed on the garage floor. Move pet food and seed into sealed plastic or metal containers first; it makes everything else work better.
The other mistake is one trap. Where there's one mouse there are usually more, and a single trap catches one, while the rest carry on breeding.
Residences and households that entertain
Homes that host functions, including diplomatic residences, tend to have larger pantries, extra storerooms and deliveries coming in regularly. Mice can arrive inside boxes of stock and settle before anyone notices. For these households we often suggest a small set of monitored stations in storerooms and the garage, checked on a schedule, so a new arrival gets caught early instead of becoming a breeding population.
A Waterkloof tip
Look at the bottom of your garage door, especially an old wooden one. Daylight showing underneath means a mouse can get in. A rubber door seal is cheap and fixes one of the most common entry points we see on older properties.
What does mouse control cost?
It depends on how widespread the activity is, how many rooms and outbuildings are involved and how many follow-ups are needed. If you've seen one mouse once in the kitchen, a couple of snap traps from the hardware store may be enough, and we'll tell you that honestly. A pantry, garage and cottage with ongoing activity is a bigger job and we'll quote it after the inspection.
Mice often share a property with rats; if you're hearing heavier noises in the roof, see rat control in Waterkloof. Mice also bring in pantry pests through stored food, and pantry pest control in Waterkloof deals with weevils and moths. For background on mice across the city, there's mouse control in Pretoria, plus our mouse work in Lynnwood next door. Our article on preparing for rats and mice has more prevention ideas.
One Stop Pest Control has been doing this for 25 years and is SAPCA registered. If mice return within three months of our treatment, we come back. Phone 012 012 5526, or send a picture of the droppings on WhatsApp and we'll help you identify them.
Questions we get asked
How small a gap can a mouse fit through?
Roughly the width of a pencil. If the head fits, the body follows, which is why sealing small holes around pipes and under doors is so important.
Is one mouse a sign of an infestation?
Often, yes. Mice live in groups and breed quickly, so a single sighting usually means others nearby. Check for droppings to judge how many.
Should I use traps or poison indoors?
Indoors, traps are usually better because there's no risk of a mouse dying in a wall cavity. We use bait stations in garages and outbuildings.
Can mice contaminate food in the pantry?
Yes. They nibble packets and leave droppings and urine on shelves, so anything they've touched should be thrown away and the shelves cleaned.
Why do I have mice in winter but not summer?
Cold nights drive them indoors in search of warmth and food. In summer they're more likely to live outside along hedges and in the garden.
Do mice get into cars in the garage?
They can. Mice sometimes nest in engine bays and chew wiring, so keeping the garage free of nesting material and food helps protect vehicles too.