How to say “Give that decanter a rinse before you use it, it's been sitting on the sideboard getting dusty for months.” in Japanese
In Japanese
そのデキャンタ、使う前にさっとすすいでね。何か月もサイドボードの上でほこりをかぶってたから。
Sono dekyanta, tsukau mae ni satto susuide ne. Nankagetsu mo saidobōdo no ue de hokori o kabutteta kara.