You should place the gel to the box immediately after use and retail store it inside of a cool dry spot. Use time period after opening is all around 3 months; Unopened expiration day is all-around two a long time.(Remember to Notice : The cleaning gel cannot be cleaned. Do https://keyboardcleaningkitamazon54208.tblogz.com/3m-keyboard-cleaner-kit-674-options-40625101