First of all, we did not say irresponsible, but it is not clear what caused the mold; Just like the buyer said, when receiving the furniture is beautiful and great, after a period of use, mold occurs, we do not know what causes it, so we can not say that the responsibility lies in us, just like buy a white dress, it is impossible to dirty, the buyer needs to take responsibility. And the cost of cleaning in the United States is very high (maybe that's what the consumption there is) we can't afford the high cost of cleaning, but we are willing to bear some of it, we also want to solve the problem, find the cause of mold; Because many of our other customers have not sent such things, and some have been using it for 3-5 years; So we guess whether the different regions of different customers and different environmental climates lead to mold breeding? BR Jason