Relocating is not a good solution. Snakes that have been relocated too far from their home range are less likely to survive. They will struggle finding food in unfamiliar territory, be more vulnerable to predators without their usual shelters, and they may cross roads, backyards, parking lots, etc., trying to get back home, which is obviously dangerous for them. If you relocate them too close to their territories it will just mean they will come back. A quick death to the snakes that have found their way into the coop is better than making them suffer for days, weeks, or even months.