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  • Writer's pictureAtlas Environmental Services

Do I have mice or rats on my premises? Do I have a rodent problem at my premises or property?

If you’re already asking this question, the answer is likely to be YES.

Even if you never see the actual perpetrators themselves, mice and rats leave pretty damning evidence as to their presence on your premises. Below are some simple ways to determine whether you have a rodent infestation and identify whether it’s a rat or a mouse.

Look for droppings – Finding rodent dropping on your premises is a clear sign of pest and also helps you to identify whether rats or mice are your unwelcome guests. Make sure you get a close look, as from a distance, the droppings may just look like a pile of dirt which you may ignore. Close inspection of the droppings will quickly help you to identify the perpetrator; shiny black and between ½ and ¾ inch long says rat, while small, smooth droppings with a pointed edge says mouse. Rat droppings tend to be in one particular place and mouse droppings are found scattered indiscriminately – effectively wherever they are active. The urine that they often dribble tends to be invisible – but it’s important to know that it is still hazardous – Weils disease is spread by Rat urine and can be fatal.

Can you see teeth / chew marks?

Another tell tale sign as to what you’re dealing is teeth/chew marks, usually found on wooden surfaces like door frames, skirting boards and inside cupboards, however they chew on any hard surface – which sometimes includes water/gas pipes and electrical/data cables. Typically, rat teeth marks are 1/8-inch long, while smaller, scratchier marks usually indicate mice. You will likely be able to hear them gnawing away at the wood with their teeth and a little investigation should be able to distinguish where they’ve been and how they’ve got in there.

Are there any tracks and tail trails?

Any dust within a room or space will highlight tiny footprints or lines from tails being dragged along. Check skirting boards, in corners and near sources of food. These footprints or lines may even be able to help you determine where the perpetrator is entering and leaving your premises.

Can you see any smears?

These canny rodents tend to stick to walls and skirting boards when moving around your premises, so if you see any unexplainable marks, you may well have rats or mice. Rodents have grease on their fur and after time they leave a greasy mark on corners of walls, around holes that they squeeze through and on electrical cables that they climb on.

Is there a musky smell in the air?

Rodents have a very distinctive smell, so if you start to notice a musky odour that you haven’t smelt before, you might want to investigate further.

Can you hear scratching and squeaking?

These nocturnal rodents rule the roost at nights, so if there is someone on your premises overnight, they may well have heard scratching and squeaking noises. Worse still, they may well have seen a rat or mouse scurrying across the floor!

If you answered “yes” to any of these questions, its highly likely that you have a mouse or rat issue.

We’re here to help for a full free comprehensive survey of your site call us on 01282 777549 or email us at

" The North West's Solution for Pest Management, Control and Prevention "

Atlas Environmental Services Ltd

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