Originally Posted by iahphx
What I want to know is whether I need to have a 4 oz bottle, or whether I can have an old bottle with less than 4 oz in it.
I think the standard bottles are 10 oz. I recall being given tiny sample bottles from my eye doctor, but I have no idea whether you can buy these small bottles in the store.
Target has small bottles of ReNu (not the recalled kind) in travel-sized items section.