In regards to pest management, there are two common types of mouse in the UK to be aware of:

  • House mouse (Mus musculus domesticus)
  • Field mouse or wood mouse (Apodemus sylvaticus).

If you come into contact with a mouse, chances are it’s a house mouse.

These mice are known as “commensal rodents”, which refers to them living with or in close proximity to humans. Commensalism is defined as a long-term interaction in which members of one species (ie mice) gain benefits, while those of the other species (ie humans) neither benefit or are harmed. Field mice are much more suited to nesting outdoors, but will possibly move indoors once the weather gets colder.

House mice

The house mouse has a typical mouse profile: small feet with big eyes and thinly-haired ears and a pointed snout with thin whiskers. Their body length ranges between 60-90mm, and the tail generally equals the length of its body, adding another 90mm.

They weigh less than 25g, and their fur colour is uniformly light brown and grey, right down to the tail which has sparse hairs on it. And keep those pegs handy – they have a really distinctive, strong smell so you’ll know if you have a large infestation of these unwanted guests.


Property and landowners have a legal obligation under the Prevention of Damage by Pests Act 1949 to keep premises rodent free, or, if rodents pose a threat to health or property, to report infestations to the local authority. Get in contact with Landcare Pest control for a professional service to remove your pest problem.

Owners of food businesses also have obligations to keep premises pest-free under the Food Safety Act 1990.

Environmental Health Officers or General Enforcement Officers can issue enforcement notices to business owners who don’t have adequate pest management procedures in place. If not complied with, these can lead to fines or even a stint in jail and a criminal record. And if a company or organisation has a highly publicised mouse problem, then it will heavily impact its reputation.

If clients and customers spot evidence of rodent infestation in the premises you manage, they are unlikely to want to do business with you. And several widely shared social media posts can help spread a negative image.


Their presence is usually detected from one of the following signs:

  • Mice droppings – these are often black, and about the size and shape of a grain of rice. Fresh droppings will be soft and moist. Each mouse can leave approximately 80 droppings per day. Common places to find mouse droppings are under the kitchen sink, around central heating boilers and in roof spaces
  • Strong ammonia smell – mice urinate frequently
  • Smear marks – these are dark grey marks left on surfaces by repeated contact with the oils in mouse fur
  • Nests – sometimes nests can be found indoors for example in lofts, under floorboards or in airing cupboards
  • Damage to stored food in cupboards and pantries
  • Gnaw marks on materials such as wood, carpets, paper, pipe cables and furniture.

Professional pest control

For any mouse infestation, the British Pest Control Association would always recommend contacting a professional pest control company such as Land Care Pest control,  we will safely and effectively take care of your mouse problem.

We are trained in mouse control and will have access to a range of professional use rodenticides that are not available to the public. Knowing how much, where, and when to deploy products is where professionals are able to take control of situations efficiently.

Land Care Pest Controllers are professional pest controllers and will take an integrated pest management (IPM) approach to tackle your infestation.

As pest professionals, we have access to monitoring equipment, which we will use to confirm entry points into your property, the size of the infestation and to track the mouse to its harbourage (nest).

We can then recommend a proofing strategy and decide on the best course of action in terms of control; this could be traps, rodenticides or a combination of both.

If you require domestic rat control, then contact Landcare Pest Control on 07973-662467.  We service, South Wales and the English border counties: Abergavenny, Raglan, Crickhowell, Usk, Tintern, Monmouth, Chepstow, Hereford, Newport and Cardiff.