The Countertops are Irresistible

Charley likes to get on the countertops. We tried using a squirt bottle on him whenever we caught him on the counter, but unfortunately, the only thing he learned is not to do it when we were around. It obviously did not teach him the countertop was forbidden territory. We still shoo him off every time we catch him on the countertop, but I turned my squirt bottle into a cleaning bottle. I filled it with water and a drop of dishwashing soap, and we just wipe down the countertop before we use it. Still, I'm wondering if anyone else has had any luck dissuading a cat from getting on the kitchen counters?