Yes they have zippers but they are jammed. We were thinking maybe trying to was the acutal cushion part to, and hopefully get them smelling better too.Do they have zippers? Unzip the covers and toss them in the washing machine (assuming they're all cloth of some type) and wash on gentle cycle until they're clean then spin dry and lie them flat, no clothes drier!
Just went through this with mine and they finally look clean! The down side was that all of the saloon cushions had buttons which had to be cut off then re- strung. Wasn't hard, no special tools either, but was somewhat tedious.