My (newish) 30-min dial timer for my bathroom lights keeps sticking. I've been told that some silicone based lubricant should be safe to spray into the mechanism. Am I going to burn down my house?
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I would not use silicone spray, personally. It might be perfectly fine, but I’ve never had it recommended to me for that purpose.
What I have been told to use, and have used regularly for a few years is CRC contact cleaner. You can find it online or in stores like harbor freight or just about any hardware store. It’s supposed to clean and lubricate electrical contacts, and works really well.