Oil Dri mats have basically one purpose. You place them under a vehicle to absorb what is leaking. They have a rubberized backing to keep the fluids from contaminating the concrete. They are disposable and serve no decorative purpose. Garage Guard products from OilDri are very popular with those who have classic cars on epoxy floors.
Drymate Max garage floor mats are our least expensive garage floor mat. They are a thin carpet like material with an impermeable backing. Great product to absorb moisture and keep your floor dry. Helps protect concrete from oil stains. This is an inexpensive and affordable solution and not generally considered a wall to wall garage flooring option.