I once met a client, a little girl born after 90. When the contract expired, the owner went to collect the house, only to find that the little girl had a big dog. The point is that the dog is pulling and peeing in a corner of the house. There is no air conditioning in the house, and the smell in the house in summer can be imagined. So she didn't dare to open the window for fear of bad smell, and ran outside to let people gossip. The gap of the security door was glued with tape, and she ran into the corridor in fear. The landlord who checked out that day was almost stunned by the smell when he opened the door. He squatted in the corridor for a long time before he recovered and quarreled with the client, holding the wall and walking away. That night, the customer fled the room without paying the deposit. The landlord asked the cleaner to clean the room, and several cleaners left, saying that the job could not be done, which would make people suffocate. So the owner opened the window to ventilate, bought a gas mask, long gloves and foot covers a week later, and cleaned it for a day. I was involved in the whole incident, so I know it very well. After a month of ventilation, the owner entrusted the house to our company. So I dismantled the walls, floors, kitchen and bathroom of the house into rough rooms and ventilated them for a week. The floor was covered with a layer of deodorant chemicals, with a partition board, a new wooden floor and brand-new furniture and appliances. We put a lot of green plants in our house to deodorize and then invited a professional in addition to formaldehyde deodorizing company to clean them up. After half a month of ventilation, I began to take customers, took five waves of customers to see the house, and vomited three times. I don't know where the urine smell comes from, but it's still a headache. Later, I bought three electric fans and blew them for two months and 24 hours. Then the house was still uninhabitable, causing all the people and intermediaries not to look at the house. I handled the whole incident, and the house lost a lot of money.