yes and no from my experience. few years ago I had trouble with about 7 of them. They can be very persistent. as long as they know there is a food source they like to eat they will come back.
To answer your question I killed 6 out of 7,the biggest smartest, I figure grandpa Henry got away never...
We are going into a warming trend. Not sure what state your in. When real cold coon den up, just like bears. racoon are not true hibernators, but after a point when the temperature drops coon can go inactive and sleep prolonged periods of time and live from stored fat. Actually it is a dormancy...