Are the quilts in the Seven Days Hotel clean?

A pillow core that has not been washed for 3 years, the dust mite content per gram of dust exceeds10000; A pillow core that has not been cleaned for 5 years will increase the weight by 20% compared with that when it was just bought, and this 20% weight is the corpse and feces of dust mites. Oh, my God! ! ! How to disinfect? Sunlight and ultraviolet rays in sunlight have great bactericidal power, but this is not enough, because in addition to live dust mites, there are dust mites' bodies and feces. Exposure can only kill dust mites. Their bodies and feces are still left on pillows, and people will be allergic to them. The correct way is: after basking in the sun, you should keep flapping outdoors and wear a mask when flapping, so as to remove dust mites and ghosts from the pillow to the greatest extent.