The deer are caught in the middle, just like humans, dogs, cats and others. The white footed mouse is where this all originates from. There are things we can do though!!
Do a bit of reading on tick tubes!
www.tickencounter.org/prevention/mouse_targeted_devices You can buy them or make your own!
www.ticktubes.com/www.practicalprimitive.com/skillofthemonth/ticktubes