The Ultimate Guide to Washing Your Tilley Hat

Today I figured out a new way to clean multiple Tilley hats at once.
For those fortunate enough to have one of those tubs with the jets, at least.

Fill the tub with cold water and turn on the jets.  Take one of those dissolving dishwashing machine packets and place it atop the intake for the jets and then, as the jets whip the tub into a sudsy froth, toss in 2-3 hats that need a clean.
For Extra fun, arrange the jet nozzles so the water becomes a whirl pool of sorts.  
Leave the hats in their churning until you are satisfied.  Pull them out and hang them over your tub.
Bonus… it will clean your tub too.

My inaugural effort was on a T1 and a T3 from my experimental group that were compromised by application of oxi-clean.  The lingering sickly sweet stench of that mess is really tough to banish.  After the whirlpool effort, the T3, which only received spot application of oxi, was much improved, but the T1 is still stinky.  For the T1, which was much more deeply stained, I used much more oxi and let it sit on the fabric for an extended period of hours.  I’m toying with the idea of trying it in really hot water as a last resort to rid it of oxi.

A note on oxi-clean use for cotton Tilley hats:
I do not believe it is actually cleaning anything at all.  On the contrary, I think oxi-clean leaves a white-ish residue on stains that tends to obscure them rather than remove them.  I came to that conclusion based on the condition of the outdoor, wrought iron picnic table that I was using as a sunny drying rack.  Where the oxi-clean treated hats sat, the table now has a weird white cloudy mess that requires scrubbing with a brush to remove.  Even outdoors, the table still reeks of oxi, not as badly as the hat but noticeable from a distance.  

Anyway, suffice it to say, I won’t be using oxi-clean on any hats or anything that will be nearer than 15 feet from my nose.

YMMV