Cov cuab yeej muaj qhov zoo nkauj zoo nkauj, kev tsim qauv tsim nyog, kev ua haujlwm yooj yim, ruaj khov thiab txhim khu kev qha, tsis tshua muaj suab nrov, kev ua haujlwm siab, tsis tshua muaj kev poob, thiab tuaj yeem tsim tau 250-320 rau tes hauv ib feeb.Cov khoom siv feem ntau yog siv rau kev sib txuas ntawm lub txaj, tsheb cushions, sofa cushions, tsiaj tawb, luav tawb, hnab springs, qaib tawb thiab laj kab hauv kev lag luam yug me nyuam.