Where do flys go in winter?

Question

Where do flys go in winter?

Answer 1

And here I thought they went south for the winter like we do,silly me.

I'm with Muffett

My Best

Answer 2

some species die out other species will seek areas to sleep out the winter, such as under loose bark and stone or maybe in the walls and attics of homes.

Answer 3

behind the wood trim and baseboards in the house, garage etc