How can I effectively use vinegar in a carpet shampooer to clean and freshen my carpets?

To effectively use vinegar in a carpet shampooer, mix equal parts vinegar and water in the shampooer's tank. The vinegar helps to clean and deodorize the carpets. Run the shampooer as usual, making sure to cover the entire carpeted area. Allow the carpets to dry completely before walking on them.