My shop goes through a lot of 70% isopropyl alcohol. It is our go to in our spray bottles for a final clean on substrates and vehicles. I can't find it in stores or online since Covid19 hit. Anyone have an active source or an alternative for cleaning? On vehicles, we typically do a clean with a mild soap/water mixture and then move to the alcohol. For signage, we use only the alcohol. We're getting pretty low, so I'm wondering if you guys have any alternatives that you like?