clean 2021 imac keyboard

Tea, milky or not, is an acidic corrosive that over the course of time will destroy the circuitry beneath the keys. This cannot be reverted by disassembling each key and attempting to clean it. It would be best to just replace the keyboard as a long-term solution, and optimal usage of your time.

I keep mugs of coffee, tea, or soft drinks at least 18 inches from my keyboards. Nothing during consumption ever passes near my keyboards to prevent this type of expensive accident.

the vodeep wrote:

I wasn't clear -- I spilled milky tea into the keyboard. It still works, but each key is very sluggish and needs cleaning under the keys. Any suggestions? Can it be opened?

No sorry, the keyboards are sealed units and can not be opened for cleaning.

Have a look at > How to clean your Apple products - Apple Support

No solvents. Just a warm, moist cloth.

I consider desktop keyboards to be consumable, and expect to replace them during YOMANK moments. 8^)