A RAT infestation is plaguing an area of Heckmondwike after a suspected drain collapse.
The vermin are seen during the day on Oldfield Lane between business premises and people’s homes.
Eleven of them were counted around the back of Bed Kingdom at 10.30am on Tuesday.
Director Ashley Hainsworth said there were even more two hours earlier, while residents are said to see dozens at night.
He added Kirklees Council told him a collapsed drain on an unadopted road could be the source.
Problems began about two months ago and Mr Hainsworth believes the possible drain issue means rats are coming out to scavenge food. Council pest control officers offered to put traps down while investigations are made by Yorkshire Water.
Mr Hainsworth said: “Rats are very territorial.
“You can put traps down all day long but if you catch one another will simply take its place.”
A council spokeswoman said: “The pest control service was first made aware of this sighting of rats outside Bed Kingdom on Friday, September 25.
“A pest control technician visited the site and advised that a drainage investigation will be required to determine the source of the problem.
“Once the investigation has been completed, we will liaise with the relevant partners to resolve the issue.”
Yorkshire Water were on site on Wednesday and vowed to repair any defects found.
A spokeswoman said: “We apologise to any residents and business owners who have seen rats in the Oldfield Lane area of Heckmondwike.
“We are using CCTV cameras and putting dye in the pipe network to try to locate any entry or exit points that might enable rats to pass.
“Any defects will be repaired and the area will be baited in the meantime.”