I use plastic frames, and my bees like drawing them out just fine. I am always short on time, so getting a box of frames ready to plug into the hive is a big bonus. I also like the fact that there are never any warped frames. Maybe try a box of them for a year and make up your own mind. I'd say melt the old wax off of them with a hair dryer, or heat gun, clean them up and re coat with wax.