The Groovewasher uses a small amount of alcohol in its cleaning solution, but not Isopropyl alcohol. This, they believe, can 'dissolve shellac surfaces, and case the leaching of the plasticizers from synthetic plastic pressings making them brittle and subject to excess wear. They thus use a version of alcohol that 'dries a little slower than iso, with almost the same solvent and miscibility characteristics', evincing their 'bias towards a less powerful cleaning solution that may require multiple cleaning, instead of a powerful, possibly damaging fluid.'