Yeah the beauty of acrylic is that it doesn't absorb anything and needs very little of this "deep cleaning". Soap and water is a great idea, I think alcohol and particularly acetone (which is what you use to dissolve lots of plastics, like the resins in fibreglass) is un-necessarily dangerous. I have soaked acryic rod in methanol overnight with no ill effects just to see, but .... why take the risk, soap won't eat plastic.