I know that sounds like a stupid ass question. I have the Logitech wireless mx keys. I wiped the keyboard down so the surface of the keys aren’t sticky, just hard to press down and some have a spasm.
Since a whole ass thing of coffee did not short it, it gives some credibility that it is water resistant. Can I just dump water on it to help it?
Maybe rubbing alcohol? It’s a solvent. Ideally you’d want to pull the battery etc. while doing this and try to tip it so the coffee gets diluted by the alcohol and then carried out as the solution drips off. I’ve seen JayzTwoCents clean other computer parts with alcohol baths. I’d try something like 70-90%. I might just be talking out my ass though. But that’s what I would try if I was determined to try to fix it without taking it apart. :p Make sure it has time to dry before using it.
Alcohol is a fantastic solvent for some things, but it’s a really bad solvent for sugar, which is likely what’s causing stickiness.
70% alcohol will work a bit better than 90 or 99, but only because of the water content. Distilled water will work better though, and is a bit safer than tap water.
The best approach is to strip it down and clean and dry each part. Dumping anything in has a high chance to cause more harm than good.
If it’s a membrane keyboard then there’s a good chance that it’ll die at some point in the future as the (fairly delicate) contacts will be slowly eroded by the liquid.