Wet or muddy shoes in fall and winter should be cleaned off and dried outside to prevent trailing mud and dirty water into your home. Use a doormat to remove your shoes, then use a shoe-cleaning brush to remove loose debris. Use a shoe stand to stand the shoes somewhere warm and dry off of the floor to allow them to dry off, before cleaning again with a brush to remove any remaining debris.
If you can't clean your boots right away, leave them on a covered porch, or wrap them in a plastic bag, in the meantime.