The service life of the sofa can generally be used for seven or eight years. If you buy our brand sofa, the quality can be used longer. Remember to disinfect regularly to ensure that the sofa is clean and tidy. Toothbrush life, 3 months: Research indicates that the total working time of each toothbrush should not exceed 6 hours. Calculated by brushing twice a day, two minutes each time, the lifespan of the toothbrush is about 3 months. It is best to replace it within 3 months, otherwise it will be covered with bacteria. The service life of rags, 2 weeks: tens of thousands of bacteria on kitchen rags must be replaced every one or two weeks. After each use, it should be thoroughly washed with hot water, dried in the sun, and sterilized with a microwave every other day. Pillow service life, 1-2 years: The pillow is used for too long, not only will it weaken the support of the head and neck, but also the grease on the hair and scalp will penetrate into the pillow, breed bacteria, and easily cause allergies and Respiratory diseases. Mattress life, 5-10 years: Although a good mattress can be used for 9-10 years, but the best quality mattress after a long period of wear and tear, the support force will also decline, affecting the quality of sleep. In addition, there will be many stains on the mattress that cannot be cleaned, making us share the same bed with bacteria. It is recommended to change the mattress every 5 years, especially for people who have poor sleep.