On Monday, December 21, 2015 at 5:11:20 PM UTC-6, wrote:
On Mon, 21 Dec 2015 16:18:01 -0600, dpb wrote:

Thanks. Comforting to know. Tried to sell the sealed plastic bucket
of latex at a yard sale. I'll keep it, mix it well and strain it
when I do open it. (latex elstomeric stucco paint)

I (re)discovered a partial container of latex exterior in nothing more
than one of the snap-lid Folger's coffee containers that had been there
for probably a year just a week ago. It hadn't even skimmed over the
top to my great surprise. Was roughly a third full; so wasn't even the
excuse of no significant air volume to 'splain it...

The storage area is nothing at all special -- it's the well house, a
roughly 10X14 block building that holds the pressure tank and at one
time surrounded the well. There's no cooling in summers, a small gas
heater that keeps it to about 50F minimum during winter. It does stay
reasonably cool in summer owing to the pressure tank water volume and
that it has only a single relatively small east-facing window and
doesn't get any traffic to speak of so doesn't introduce outside air
frequently.

--

I guess that proves Folgers coffee is safe inside the can.
Appears the can does seal air-tight then....

Coffee containers keep getting smaller...years ago the largest can was 48 oz. now, 24 oz. may be the norm. You're not getting a gallon of liquid in there!