Finding evidence of rats in your home is one of the most distressing pest problems a homeowner can face. Rats are not just unpleasant — they're dangerous. They carry diseases, cause serious structural damage, and can pose a fire risk by gnawing through electrical cables. This guide will help you identify a rat problem, understand your options, and decide when it's time to call a professional.
Droppings — Rat droppings are dark brown, roughly the size and shape of a grain of rice, and are typically found along walls, behind appliances, and in cupboards. Fresh droppings are dark and moist; older ones are grey and crumble easily.
Gnaw marks — Rats have teeth that grow continuously and must gnaw constantly to keep them in check. Look for gnaw marks on food packaging, wooden skirting boards, cables, and pipework. Fresh gnaw marks are pale and rough; older ones are darker and smoother.
Greasy smear marks — Rats follow the same routes repeatedly, and their oily fur leaves dark smear marks along walls, skirting boards, and through gaps. These marks are a reliable sign of an established rat run.
Scratching or scurrying sounds — Rats are most active at night. If you hear scratching, scurrying, or gnawing sounds in your walls, ceiling, or under the floorboards — particularly at night — it's very likely you have rats.
Nests — Rats build nests from shredded material — insulation, paper, fabric, and cardboard. Nests are typically found in dark, undisturbed areas such as loft insulation, behind kitchen units, or under floorboards.
For a very minor, early-stage problem — a single rat with no signs of a nest — snap traps can be effective if placed correctly along known rat runs. However, DIY rat control has significant limitations:
- Rats are neophobic (fearful of new objects) and may avoid traps for days or weeks
For any established infestation — more than one rat, evidence of a nest, or signs of activity over more than a few days — professional pest control is strongly recommended.
A professional pest controller will take a systematic approach:
Survey — A thorough inspection of the property to identify signs of activity, locate entry points, and assess the scale of the infestation.
Treatment — Targeted placement of rodenticide bait stations and/or traps along identified rat runs and near entry points. Professional-grade rodenticides are significantly more effective than over-the-counter products.
Proofing — Identifying and sealing entry points to prevent re-infestation. This is the most important long-term step — without it, the problem will recur.
Follow-up — Monitoring visits to check bait take, remove dead rodents, and confirm the infestation has been eliminated.
- Keep food in sealed, hard-sided containers — rats can chew through cardboard and thin plastic
Country Pest Solutions provides professional rat control across St Helens, Warrington, Liverpool, Wirral, Chester, Wigan, and the wider North West. Our RSPH-qualified technicians offer same-day emergency callouts, 7 days a week.
We also offer our unique K9 rat detection service — using trained Lakeland Terriers to locate rat runs and nesting sites quickly and accurately, even in large or complex properties.
Call us on 01744 382 482 for a free, no-obligation quote.
Available 7 days a week across St Helens, Warrington, Liverpool and the North West.