While we're on the subject,
"2oz" is an amount that seems to come up a lot in detailing; "2oz of QEW per 2 gal bucket", "2oz of #00 to 2 gal water", "2oz of product per car". Or, if you want to pass out samples, 2oz is a nice size.
Go to Michael's craft store. They sell 2oz flip-cap bottles for 50 cents or something cheap like that.
My #1 use for these is to keep from using too much product. I'll put 2oz of MPPP in a bottle and do the Malibu, for example, and try to have a little left over. Or one 2oz bottle of SG should do two cars.
They also have 4oz pump spray bottles that shoot a very fine mist; I've heard some people here say that they like a fine mist for FD. I think they are .79 each.
Tom