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.
Information about all of our rodent control services.
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How we control rats (in Glasgow and Ayrshire)
We utilize 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: 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 to 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 surveying (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 gets 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-ingress 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 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 perimeterof 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 survey, rodenticidal treatment and rodent tracking. An extra follow-up visit to check 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 normally is 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)
Eradicating a rat infestation from inside your home
The fixed price is £180 for 2 visits*
The 1st visit is for surveying the job, to assess the rat infestation, and to administer our treatment and rodent tracking. The 2nd visit is for an inspection and re-assessment after the treatment. 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 and 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.
Add 1 extra follow-up visit for £50
An extra follow-up is for re-inspecting the treated property, our rodenticides and pest control hardware. Also, to review progress to eradicating rats from indoors and to do more of rodent tracking. We can also do rodent proofing or quote for rodent proofing on this visit.
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 in just 2 pest control visits. The potential rat death count can be increased by you adding 1 extra follow-up visit.
In areas with high external density of rats, you might need more visits for repeat or additional inspections and treatments. If required, they would cost about half-price of the initial treatment plus inspection.
External (only) rat control, monitoring and prevention around your house
If you do not have any rats in the house but you are concerned about a growing rat infestation outside your house, we can assist you by treating open areas with cholecalciferol (not SGAR to comply with the latest legislation) rodent paste applied secured within 4 external bait stations at the cost of £150 to include 1 treatment and 1 follow-up inspection only. If required, additional treatments and follow-ups would cost half price of the initial treatment and inspection. We can assist you beyond this by providing our regular (usually every 2nd month) rat monitoring and prevention service (with the same 4 external tamper-resistant bait stations and cholecalciferol and non-toxic rodent monitoring paste secured in them) at the cost of £60 each service visit.
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 a house and advise you to instead to treat the whole property. Nonetheless, we can still do it for you by the means of effectively utilizing professional-grade rodenticides (may be combined with snap traps in some of our treatments), we can make your kitchen or the loft rat-free in just 2 visits (3 weeks apart) for £150. An optional extra follow-up visit in 1-2 weeks to check progress of the treatment by inspecting and replenishing rodenticides and tracking dust/gel, or for inspecting and resetting traps would cost an extra £50. We can also help you get rid of rats in a garage or in any 1 room only by administering 1 rodenticidal treatment and 1 follow-up inspection (2 weeks apart) for £130; to add an (optional) extra follow-up after 1 week would also cost £50.
Rat proofing
In our rodent proofing work, to stop rats from re-entering the treated internal areas, we use mainly steel wool, wired mesh, expanding foam and glue. We can rodent-proof 1 medium-size rat hole or gap for free after completing rat control. Proofing more than 1 medium-size hole or gap would cost £20 for each medium-size hole, and £30 for each large hole or gap. We might not be able to rodent-proof some massive holes or structural openings to stop rats from entering and would advise you to hire a builder instead.
Page last updated on 22/02/2025