Rat infestation is when one or more rats get into your building or home
Unfortunately for rats, there is no food within wall cavities, floor cavities or roof voids, so there is nothing for rats to eat in the building fabric and they can’t sustain their existence within it.
Each rat needs around 20g of food a day (which is around the same weight as a ‘Fun Size’ Mars bar) so don’t think the rats are getting by munching on the odd spider or clothes moth.
To achieve this, the rats will need a link from the building fabric to either a sewer and/or the great outdoors.
Usually it’s both as once the rats enter via the drainage they tend to burrow out or escape from the building fabric via weak points such as lintel bridges, vents, low level roof lines, etc.
That way the rats can access food from both the drainage and the great outdoors!
Rats have an endless food supply in our drains and sewers
In the vast majority of cases it’s the link with the drains that sparks a rat issue within a building. Drains are warm, safe, secluded for the rats and of course full of food.
Every dishwasher on the street dumps the plate scrapings into the sewers along with every sink macerator.
Oils and fats from cooking congeal out inside the drainage to provide large reserves of calorie rich fat residues for the rats.
Commercial restaurants often have industrial size macerators that will blend up to 25kg of food waste each day and pump it all into the sewers.
Insect life such as slugs and earthworms often get washed through from gulleys and certain species such as the Oriential cockroach will often live inside waste systems alongside the rats.
On top of this there is of course the undigested food waste present within human faeces – yes, rats won’t let this go to waste either!
Rat infestation needs resolving at point of entry
Drains are full of rats and these rats will then readily enter a building fabric where the opportunity exists as the drains are not the ideal place to rest or raise kids.
The key to resolving any rat ‘infestation’ is to break the links between pipe and building fabric and the great outdoors and building fabric