Human pee is composed of water and uric acid crystals. Uric acid crystals are insoluble, which makes cleaning human pee out of carpet a challenge, especially once it has set. The best thing to do, is to clean up pee as soon as it is spotted. If it is cleaned right away, it has less chance of soaking through the carpet and padding and setting into the carpet, which makes removal more difficult. If it has already set, it can take several attempts to clean human pee out of carpet.
Lay a towel or paper towels over the human pee. Step down to absorb the moisture. Continue until no more pee is being absorbed.
Spray the stain with a solution of 59 ml (1/4) cup vinegar and 946ml (4 cups) water. Alternatively, pet-urine removers containing enzymes can be sprayed on human pee. Gently rub the area using a gloved hand and a rag or soft cloth, to allow the carpet fibres to absorb the mixture. Allow the mixture to sit on the carpet for 10 minutes, or longer based on the pet-urine remover instructions.
Place a rag or soft cloth over the carpet. Step down to absorb moisture. Continue until no more moisture is present. Repeat the steps as many times as needed to clean the human pee out of the carpet.