be wary of using a spray.... I don't really touch the stuff anymore!!! Spray on stuff is usually crap, it doesn't really provide decent lubrication or cooling effect, and it'll actually wash away the oil that you should be using instead... No oil means it'll wear down much faster.
I'll occasionally use a spray when doing a big hairy dog to keep the clippers going a bit better, BUT I spray the blade, wide it, then re-oil lightly, wipe again, and THEN carry on. ie, I never use a spray without oiling again.
I do use a rinse at the end of the week at least, but again, oil them. I can't remember the brand I use though! lol.