I clean and lube with oil.
That makes sense, I hadn't thought about that for deep cleaning.I have used it to clean reloading dies.
All I'm doing is removing excess lube, including the WD-40. I check the dies often, but WD-40 is about the only thing that doesn't leave it cruddy. Carb and brake cleaner both work well to remove moisture as well, blowing out any carbon, copper, brass, etc in the die.Carb cleaner cleans off carbon, 'gum'(not Wrigley's) and varnish(cooked oil). If that's what you're doing, it's fine. Don't think it'll clean copper, etc. off though.
Carb cleaner yes or no