Here are some signs of having a mouse in your home, particularly during the winter months when they seek warmth in the Blackfriars area:

1. Droppings: One of the most obvious signs of a mouse infestation is finding small, dark droppings scattered around your home. These pellets are typically about the size of a grain of rice.
2. Gnawed Items: Mice have a constant need to gnaw to keep their teeth in check. Look for chewed-up cardboard, wiring, insulation, and even food packaging.
3. Scratching Sounds: Mice are active at night, and you might hear them scurrying in walls, ceilings, or floors. They can produce a distinct scratching or rustling noise.
4. Nesting Materials: Mice build nests using readily available materials. Keep an eye out for shredded paper, fabric, or insulation in hidden corners.
5. Grease Marks: Mice have oily fur that can leave smudges along their regular pathways. Look for dark streaks along walls, baseboards, or near entry points.
6. Unusual Pet Behavior: Cats and dogs may exhibit increased interest in certain areas if they sense the presence of mice. They might scratch or paw at walls and corners.
7. Visible Mice: While less common, you may actually spot a mouse darting across a room, especially if their population has grown large.
8. Food Debris: Mice are notorious for raiding food stores. Look for gnawed food packaging or small nibbles taken out of stored food items.
9. Foul Odors: An infestation can lead to a distinctive, musky odor. This is particularly noticeable in enclosed spaces or in areas where mice are concentrated.
10. Tracks or Footprints: Mice often leave behind tiny footprints in dusty or dirty areas. These tracks can be a telltale sign of their presence.

If you notice any of these signs, it’s important to take action promptly to prevent the mouse population from growing. Seeking professional pest control services, especially in densely populated areas like Blackfriars, can be crucial in effectively addressing the issue.