The discovery of the drug laboratory has been described as "unacceptable" by police.
The council is pushing to speed up the clean-up progress in the city.
"That's a gnarly name for a town."
FENZ said the blaze was "well involved" when crews arrived on the scene.
Researchers trawled through thousands of posts on anonymous online forums to find Brenton Tarrant's messages.
"I suspect there will be other cities having a laugh at us."
Southern mayors have expressed concern at the ability of pensioners to keep up with rates if they continue to spike.
Mouse droppings and urine were discovered on shelves in 2023.
It's the second rodent issue Countdown has faced this year.
