Someone wrote:

I live in Royal Oak, Michigan, a close-in suburb of Detroit. Recently
a handful of rats were detected in a one-mile square area in the north
end of my city. The city fathers (and mothers) were rightly
concerned, and took action. One of the actions was to ban composting
of all kitchen waste, because it was considered an attractant to
rodents.

Anything they find edible is an attractant to rodents. Warmth and
shelter is also attractive. Why the city of Royal Oak determined
kitchen compost was at the root of their rat problem is a mystery. A
determined group of gardeners should address this issue.