Darrel Toepfer wrote:

snip

http://www.sportys.com/pilotshop/pag...Product_ID=299
Travel John (pack of three)
Absorbent pouch turns urine into gel instantly while destroying bacteria
and odor. Specially designed collar works for men, women and children;
spill guard prevents back flow during use. Convenient, sanitary and
compact, the Travel John is easy to use while sitting or standing. Will
not leak, even if punctured. Keep several in the plane, car or boat.
Holds 24 fl. oz.
Travel John (pack of three)
ID #: 6585A
Price: $5.95

I use these and they work just fine. I think I would seek alternatives if I
needed them more often but I don't make that many long flights.

We used to use one of those strangely shaped plastic bottles they give you
in the hospital and I'd probably go back to that if the chemical packs got
too expensive.

--
Frank....H