Apache Mills' Iron Lattice Entrance Mat, Kempf's Rubber Scroll Doormat and Clean Machine's High-Traffic Doormat are highly rated outdoor mats as of 2015, according to Amazon.com. Each mat is designed to withstand harsh weather conditions all year long.
Apache Mills' Iron Lattice Entrance Mat has a decorative iron lattice design with a rough surface texture that absorbs water and scrapes off dirt from people's shoes. Kempf's Rubber Scroll Doormat is a non-slip rubber mat that features an open scrollwork design that traps dirt and debris, while allowing water to drain through it. Clean Machine's High-Traffic Doormat is made from AstroTurf and holds over 1 pound of dirt. It is resistant to moisture and mildew.