Mice are a common pest control problem all year round. Their keen sense of smell and an ability to squeeze through tiny gaps means they’re continually finding their way into homes and offices in search of food.
Air bricks, designed to allow ventilation to voids beneath wooden floors, can also become an unintended entry point for Mice. While the holes in air bricks are designed be too small for mice to use, they are not always an effective barrier, particularly if damaged.
The common house mouse (mus domesticus) is able to find its way through surprisingly tiny holes. Capable of compressing its body, a mouse can get through a gap no wider than a fingertip, or the thickness of a pencil.
Mouse proof air bricks which are at risk
Air bricks can allow all sorts of inconveniences into your property, including cold draughts. For that reason, along with pest control, some people block them up. However, the ventilation they provide to the voids beneath floors is needed to reduce the risk of wet or dry rot taking hold of timber.
If you want to make air bricks Mouse Proof but still allow them to deliver ventilation, you need to cover them with a fine mesh or grille. The covering must be able to withstand rodents’ teeth, as they will attempt to chew their way through material which is preventing them from reaching sources of food.
You can buy steel grilles designed specifically to cover air bricks, which you can fit yourself. These are available in various sizes to cover the different types of air brick which have been used in construction over the years,
Rodent proof air bricks are prevention not a cure
Covering air bricks will prevent mice from using them as an entrance, but you could also be trapping them inside your premises. Or they may have found another way in and out.
If you already have problems with mice or other pests and you’re not sure how they are getting in, you would benefit from a survey by a pest control specialist. They have the experience to identify a variety of potential entry points, such as disused pipes and gaps in brickwork that you may not even have noticed.
A pest controller will also be able to spot other signs of pests. Droppings, damage and distinctive smells are all giveaway signs to the trained eye and nose.
When it comes to dealing with mice already inside your property, there are a number of methods available. These range from humane mouse traps to lethal poisons. Again, specialist advice is recommended because to be effective, traps and poisons need to be laid in the right places and baited appropriately.
Making air bricks mouse proof is just one of the many measures that you can take to protect your home and commercial premises from mice and other pests.