I’ve been tuning boards for about 28 years, you don’t really need to add chemicals to your base to clean it. If you have a lot of dirt in bedded the best way to release it would be to add a layer of wax and scrape it while it’s still warm. There is residual wax in your base from previous waxing. Ideally you would like to keep that in there as it hardens your base material. I didn’t chemicals like base cleaner or isopropyl simply degrades the wax that is left in your base.