The most likely source of the fly infestation in southern parts of Llanelli has been found.
Carmarthenshire County Council’s environmental health officers, working with independent pest experts, believe they have traced the issue to a recycling plant in the vicinity of the residential area affected.
As a precaution, the area is being spray-treated under the supervision of environmental health officers and advice is being given to the company.
It may take a few days for the treatment to take effect.
It is one of a number of potential sources that officers have investigated in the past week following complaints from residents.
The council has put additional resources in place to help resolve the issue, including extra staff and external pest control experts, which identified them as a common house fly.
Officers have been visiting homes and businesses premises across the area to gather information and offer advice and support.
Support will continue to be made available to vulnerable people, in particular older people and people with disabilities and medical conditions, should they require it.
Cllr Philip Hughes, executive board member for public protection, said: “We are confident, following extensive enquiries, that we have now located the source of the problem.
“We are working with our experts to treat the area with immediate effect and hope that this will resolve the problem for residents.
“We will of course work with the company to ensure that there is no repeat of this situation which has been unpleasant and upsetting for many people.”
He added: “I am grateful to residents for helping us with our enquiries, and our staff who have worked tirelessly to deal with this issue.”
Whilst treatment is underway, residents are being reminded of basic hygiene advice, which is to keep food in containers and in the refrigerator, to clean work surfaces, keep windows closed when possible and to treat areas with household pesticides.
Anyone who needs advice or support should call 01267 234567.