A little help appreciated guys/gals... I have a prospective client who wants their vinyl windows in their sunroom/lanai cleaned. I haven't actually spoken to them yet on the phone, this was via posting on the "Nextdoor" app today. They mentioned trying Zep vinyl window cleaner and it worked great but don't have time to do the work. So, I understand this isn't like normal glass-w-squeegee cleaning, more of an apply and rub with a cloth type deal. Have any of you used this ZEP or do you have another product that is better or easier? Also how do I price something like this? Any pointers before I go to quote the job? Another neighbor of their's is interested in having this done as well, so maybe this job will snowball into more referrals.