One or more keys on the keyboard do not respond

My wireless Apple Keyboard A1314 started acting up. It chose not to print some characters, some with the right and some with the left shift keys. Some with both. I read various methods to cure the problem, some thru the Apple presences, some thru the water from the sink. Well, I would like to add my 2 senses- time and use. After a while the dirt that accumulates could use some cleaning, so I sprayed electrical cleaner on the keyboard- CRC QD Contact Cleaner. I found it a Home Depot for about $8.00. for 11oz. It is safe for plastic and Aluminum and drys quickly. If you use or knows someone who uses Paslode cordless naiI guns, Paslode makes a Degreaser Cleaner. I have also used it with success.

Good luck, I hope this is useful info.