If you don’t own a large vacuum cleaner, rent a wet/dry vacuum from a local hardware store. Use the vacuum hose attachment to get into hard-to-reach corners and under furniture.
If the dog odor is concentrated in one area of the carpet, sprinkle baking soda in that area only to focus your cleaning. Be sure to keep pets away from this area while the baking soda sets in. It is not toxic to dogs but it can be harmful if ingested in large quantities.
Black lights designed specifically for pet messes are available online or in select pet stores.
Outside of regular baths, bathe your dog if its coat gets soiled while playing outside.
Reward your dog by petting it or giving it treats after you clean its paws so it develops a positive association with the process.
Brush your dog on an easy-to-clean surface, like a ceramic floor.
