The author of the response letter refers to traps being present under aisle shelf units. An explicit recognition on Sainsbury’s part that there is an in-store problem.
Realistically it is impossible to prevent a rat infestation in the environs from being present within the store itself.
I see no proposal to close the store even with this in-house acknowledgement that there are rats present. Some comedic member of staff or customer had placed a wind-up toy rat in the vegetable area last Friday.
Even more comically those of us who have been around a little longer will remember that that the store suffered from a long term infestation of wild birds that pooped everywhere, including on uncovered fresh food.
It took an extended period of time before this problem was resolved (I suspect by extreme measures including shooting the birds) and once more with no hint that the management considered store closure. It was a considerable time before we resumed buying fresh food under those circumstances.