You can also clear the area immediately around your house. This is a tradition in rural Texas that actually originally came from Africa with the slaves. Snakes and mice both prefer cover, even that of fallen leaves, so if you keep a strip of land around your house clean of all plants and debris you will be less likely to have either critter come close enough to your house to find the ways inside.
You can also limit entrance by carefully going around the outside of your house and blocking any potential entry ways. However, be aware that neither mice nor snakes need very large openings, and you might easily overlook a few. They also are often good climbers so openings way up high need to be tended to as well.
And finally, as others have said, pets can be a big help. Our Shar-Pei was an excellent mouser (one of their jobs back home in China actually). Terriers are also noted for their hunting enthusiasm. Cats, of course, are often fascinated by small critters. However, I have actually had more interlopers caught by the dogs than by the cats. OTOH the cats are very good at letting me know there is a problem. In our house mice sneak in through the drier vent so the cats like to sit in the laundry room staring fixedly at the drier.
Good luck! I wish I lived deep in the woods – I have done the best I can by planting 27 trees on my 1/5 acre lot but it is a long way from being a “woods” (although the neighbors call our house “The Forest.”)