What are you using for a water repelling fabric spray?
Years ago I sprayed a favorite hunting hat and that smell was so strong I had to separate it from my hunting cloths and abandon it entirely. Eventually I tossed it into the garbage. I don't like G-tex and the other "breathable waterproof" liners. TIA
Jim

Look in the camping dept of your local store they make a spray for tents that works really well. I can’t think of the name off the top of my head!
Just thought of it. It’s scotchguard!

Scotchguard or Camp Dry. After spraying hunting cloths let them air out a good while.

Those both worked for me on clothes and restoring rain jackets. However, I use a wax/ oil based product on my dedicated rain jacket for hard field use where I am not simply going from car to building.

BTW, while we are on the subject, does anyone have field testing with any products that might make my lightweight polyester camo waterproof? I need to make it into a waterproof tarp that won't mist in a hard downpour.

LOL

Not impressed with campdri. I’ve used it on a cordura cantle bag and cordura top packs and it’s good for a while, but in REAL and persistent rain, it allows the previously urethane treated fabric to seep water to the contents.

There is a newer nanotechnology spray that looks promising. HomeyD had it last time I looked. No doubt there are several brands. That’s the next thing ima trying.

I did that with some ripstop nylon using Olympic Waterguard from Home Depot. It seems to have worked fine. I spread it out and turned a sprinkler on it and nothing got through. I used a cheap paint brush but on larger jobs a paint roller would be better. You can spray it but be sure to get the sprayer clean when you're done so you don't waterproof the nozzle.

Gearaid revivex DWR.

If it works for you on nylon, I should give it a try on some polyester to test, then put it on my tarp cloth.
Question. Does it remain flexible?
Does it ever get tacky in the sun on a hot day?
Does it flake of at all when taking it out of storage?

What’s that stuff in the orange top? Usually about $7 for a big can at China Mart. Need to let it air out a day or so but works well

One thing I think is important to mention is that some spray repellants are silicon while others are a fluoride compound. It's a good idea to spray both outdoors and let them air out. Fluoride compounds are very toxic, so handle with care if you use it. You might want to use disposable latex gloves. A breeze might keep it out of the lungs too.

https://www.brighteon.com/4a418b77-2621-48da-80be-a5443e3130b6

https://askinglot.com/what-is-scotch-guard-made-of

"Scotchgard is a fluorocarbon chemical that -- when applied to upholstery and carpet -- repels water, oil and stains. Even though Scotchgard helps prolong the life of the item, it can fill the air with an unpleasant chemical odor. This odor can last for days after you have had the carpet or upholstery Scotchgarded.'

"The original formula for Scotchgard was discovered accidentally in 1952 by 3M chemists Patsy Sherman and Samuel Smith. The compound perfluorooctanesulfonamide (PFOSA), a PFOS precursor, was an ingredient and also has been described as the "key ingredient" of Scotchgard."

Unfortunately, Scotchgard is a fluoride compound.
Warning: Use extreme caution or not at all.

Here what I spray my hunting clothes with. It does a good job.
https://www.atsko.com/permanent-water-guard-gallon/

What do you use to apply it with ?

Application method?

Oops. Speedy tootster.

https://www.atsko.com/1-liter-pro-pump-bottle/

303 fabric spray for boats works great

Thanks.
That might work.