This item was used by a girl, but the frequency of use was low, and it was mostly kept in the toilet. The yellow cover is unopened, and the pink one was attached once but immediately removed. I wiped it with disinfectant wipes and a brush, but I may not have been able to clean the fine details, so please refrain from purchasing if you are concerned. It costs over 3000 yen on Rakuten, so how about getting a good deal? It can generally be installed on TOTO toilet seats, but it cannot be installed on the toilet seats listed below. ・Toilet seats for infants: TC30/TC31/TC40/TC425N/TCF40/TCF41/TC60, etc. ・Special shaped toilet seats: TC111Z/TC906, etc. ・Toilet seats from other companies/portable toilets, etc. that do not match the dimensions in the figure below.