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Rats

Rattus norvegicus and Rattus rattus

Size and appearance of common rat (aka Norway or brown rat) and ship rat (aka black rat)

Norway rat, also known as the brown, sewer or common rat is the prevailing subspecies of rats in the UK. Ship rats (aka black rats) are now very rare in the UK and when they do occur, they are mainly confined to port areas. Since ship rats are not common in Ayrshire or Greater Glasgow where we provide our rodent pest control services, we focus (on this page and in our work) on the prevailing common (brown or Norway) rat. Common rats are bigger than ship rats. The average weight of an adult common rat is 200-400g; we have seen some common rats as big as 500g in urban Glasgow and suburban Ayrshire. The colour of common (Norway) rats can vary but usually, they are brown and with grey underside. Common rats like to live near food and water sources but are known to regularly walk distances from several hundred metres up to a couple of miles (over 1 night) if food and shelter (or both) are scarce; however, the most rat activity is within just 30 metres of their burrows. Unlike ship rats, common rats are not as good climbers, although, they can still climb up pipe chases, rubbish chutes and chimneys within buildings or roughcast on the outside of buildings (e.g. in contact with a vertical drain pipe). Colonies of rats live outdoors as well as indoors. It has been observed by pest controllers in the UK (which has significant seasonal weather changes), that rats are drawn towards buildings in autumn and winter when they are also more likely to enter people's homes and create new infestations.

 

Reproduction in (common) rats

In a rat colony, about half are males and half females. A litter of (common) rats typically consists of 6-11 young rats. The gestation takes 21-24 days. Young rats are sexually mature in 12-16 weeks which is when they start to reproduce. Female rats then can give birth about every 28 days. A new rat infestation outside or inside your home may take less than 4 months to form if you do not take a decisive action in controlling them.

Rodent control

Information about all of our rodent control services. 

Mouse control

All about mice and our mouse control, including the costs.

Grey squirrel trapping

All about grey squirrels, how we trap them, and how much it costs.

Contact

Contact our rodent control expert.

How we control rats (in Glasgow and Ayrshire)

 

We utilise only the most effective and legal methods of rat control while adhering to the strict code of practice by the CRRU (Campaign for Responsible Rodenticide Use) to which we are a signatory.

 

Here's what we do and how we do it: Equipped with the most up-to-date knowledge, on-the-job experience, and with the most effective but tested and safe pest control materials, our technician will arrive at your home in an unmarked vehicle, usually within a day of you requesting our rat control service (in Glasgow or Ayrshire). On the initial visit, he or she will start with a survey (visual inspection) of the interior and exterior of your home. If rats are confirmed, our pest control technician will discuss the most suitable treatment plan with you, including a risk assessment. Initial rodenticidal treatment is safely administered in and around your home. In line with the survey and risk assessment, contact poison is dispensed into the holes and gaps that could be rat entry points (to your house). Fast-acting single-feed edible rodenticide is deployed on trays in rat-intrusion-prone internal areas or where rat activity has already been noted. Within the building, we focus our treatments on the areas where rats may pass through when on the move and on their potential nesting and breeding sites. Some of these areas could be your utility cupboards, the kitchen, the loft, the basement and the garage. Rodent tracking is carried out using contact rodenticide and tracking dusts or gels. We know that rat infestations indoors are most often extensions of an outdoor rat infestation, which is why we treat not just the inside of the rat-infested house but also the outside. A multi-feed rodenticide that is suitable and legal to be used (for professional use only) is deployed in (usually 4) external bait stations positioned around the outside perimeter of the house being treated for rats. The minimum number of our pest control visits that you will need is 2; a survey, an initial treatment and rodent tracking are done on the first visit, a follow-up inspection is in 3 weeks after the treatment. However, we recommend you 3 visits in total. The 1st visit is for a survey, rodenticidal treatment and rodent tracking. An extra follow-up visit to check the progress of the treatment, to replenish rodenticides and tracking dust or gel, to inspect and reset traps, to remove dead bodies of rats etc. is best about 1 week after the initial visit. We could also quote for and do rodent proofing on this extra visit. Otherwise, we can quote for proofing on the initial visit and do the work on the final visit. The final follow-up inspection is normally in 3 weeks since the initial visit. Here we check all our baits and traps and re-assess the rat situation before removing them along with our external bait stations and any accessible carcasses to close the job. On our last (final) visit, we can also do any (optional) proofing work that has been quoted for either on the initial visit or on the extra follow-up visit (a week after the initial). In areas of high rat density, we recommend you to continue with regular monitoring and preventing rats to stop new rat infestations from taking hold in the future. Feel free to ask about our domestic rat monitoring and prevention service. Our rat control treatments can be made child and pet-friendly.

 

Our quotes for eradicating infestations of rats and rodent proofing

(available in Glasgow and Ayrshire)

A visit to survey only

You are welcome to enquire and ask for our opinion and/or advice on your rat issue. A phone consultation or advice by email are free of charge. A visit by our technician to survey the interior and/or exterior of your property for rats costs £50. You can then get a £20 discount if you book a rat control treatment within one month of the surveying visit. Note that the survey done on the same visit before the rat control treatment would cost you nothing.

Eradicating your rat infestation

The fixed price is £186 for 2 visits*

Our initial visit is for surveying the job, assessing the rat infestation, administering our treatment and rodent tracking. The second visit is for an inspection and re-assessment after the treatment and rodent-proofing. The 2nd (or final) visit is usually in 3 weeks after the 1st (initial) visit. This price is based on an average-size 1-3 bedroom residential property with a starting or moderately-advanced (but not severe) rat infestation. *Please note that treating larger than 3-bedroom properties and/or severe rat infestations costs proportionately more.

 

Adding extra follow-up visits

We recommend our customers add one or two extra follow-ups to the pest control treatment plan, not only for general peace of mind, but also to achieve complete eradication of rats indoors and for better rat control outdoors. Extra follow-up visits are for re-inspecting the treated property, checking and replenishing rodenticides, rodent tracking, maintaining snap traps, and removing accessible carcasses. We can also do internal rodent proofing or quote for any rodent proofing to be done on the next visit. Odour control measures can be put in place if required. The extra follow-up visits are optional, usually 1-2 weeks after the initial visit, or 2 weeks after the final (2nd) visit. The price of one extra follow-up visit is £60, and it is due on completion of the visit. The customers who book 1 or 2 extra follow-ups can have disinfection or deodorising, or both, at no extra cost; alternatively, they can choose free rodent-proofing work instead, worth £40 or £80.

 

Controlling the rat infestation outside your home

Based on the rat behaviour known to us, we reckon that your rat infestation indoors is probably an extension of a bigger-scale rat infestation outdoors (in the area where your house is located), which is why our treatment indoors gets automatically extended for outdoors by placing at least 4 external bait stations outside your home, where it is possible. There is no added cost charged to our customers for the external part of our rat control treatment.

 

This treatment, administered by us, can safely kill as many as 60 rats within the space of 2 visits. The potential death count of rats can be increased by adding extra follow-up visits. In areas with a high external density of rats, you might need more visits for repeat inspections and treatments.

Exterminating rats in the loft, the kitchen, a garage, or in 1 room only

We do not recommend treating for rats in just a part of the house and advise you to instead treat the whole property, including the outside. Nonetheless, we can still do this for you by means of effectively utilising professional-grade rodenticides and snap traps. We can make your kitchen, the loft, a garage, or any one room rat-free in just 2 visits (2 weeks apart) for £150. Optional extra follow-up visits (if required and requested by the customer) cost £50 -£60.

Rat proofing

In our rodent-proofing work, to stop rats from re-entering treated internal areas, we use materials such as steel wool, wired mesh, expanding foam and glue. We can rodent-proof 1 medium-sized rat hole or gap for free after completing rat control. On request, proofing more than 1 medium-sized hole or gap would cost £20 for each medium-sized hole, and £30 for each large hole or gap. Medium-sized holes or gaps are up to 3'', large holes or gaps are 3-6''. We might not be able to rodent-proof some massive holes or structural openings, and we would advise you to hire a builder instead.

External (only) rat control, monitoring and prevention of rats outside your house

If you do not have rats in the house yet, but are concerned about a rat infestation outside, we can assist you by treating the outside only. As standard, we place 4 external bait stations around the outside perimeter of the building and bait (with suitable rodenticides) rat burrows (nests) if present. The price of  1 treatment and 1 follow-up inspection, over 2 visits, is £155. If required and requested by the customer, we can help with repeat inspections and treatments for £60 per additional visit. We can assist you further by providing regular visits (usually every 2nd month) for rat monitoring and prevention (with the same or similar 4 external tamper-resistant bait stations) at the cost of £60 for each service visit.

Page last updated on 01/01/2026

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