I know people who use the logo as they had there system in the past, before i got into window cleaning i just thought that the ionics sign just ment the person had a tank in the back and cleaned windows with a pole with a brush on the end and the method was called reach and wash, dont tell me that commercial companys have ever rung up a window cleaner and said we are only willing to ask you to clean our premises if you have a ionics system on board of your van, all they care about is that its cleaned properly and within h&s.
Chris