Scott: Not to disagree or anything... I've used 20/20 for like 5 years or so but the smell of the Pro-line is much much stronger... There are 2 pro-line glass cleaners from EO and I'm using the blue one, the other one is green, but im not quite sure what the difference is. No matter what dilution I do with the pro-line it doesn't smell the same as 20/20...
but if it is, then the proline is much better in value than 20/20 then, since the proline costs under P1000 (philippine peso, so divide that figure by 58 to 60 or so) a gallon undiluted... So if you follow the recommended dilution (1:15), you can make 56 gallons of glass cleaner for under $20 bucks!!!
That's $3 per gallon of glass cleaner hehe... How's that for value.