Would this work well to remove the smell of forest fire smoke from synthetic sleeping bags?

Yes. I used it for my coat and sleeping bag after working a backcountry trail crew all summer. Removed the stains and most of the smells. I used a little bit of white vinegar for the rest.

How long does the product itself last? Is it shelf stable for a few years? Or does it degrade and not clean well after being opened for a year?

it is shelf stable for a year . I have used it after its been open for a while and it cleans just as well.

Does this product contain UV brightners?

Definitely NOT! There is a potential for problems if you wear clothes impregnated with optical brighteners in natural sunlight. You should definitely avoid UV brighteners. NikWax is the best product that you can use for your outdoor wear. It will keep your active wear looking and performing like new. No, I don't work for NikWax:} I'm a skier with a lot of pants and jackets. Kjus, a manufacturer of luxury ski wear, actually recommends NikWax on their site for care. I've been using NikWax products for years and it has kept everything perfect and won't strip the clothing of its protective coating. I use more than just the Techwash too. I use their down wash product and also some of their leather waterproofing and cleaning products on my gloves and footwear.

Would this be a good choice for getting the smell of forest fire smoke out of synthetic sleeping bags?

I thank it will work. Used it to clean motorcycle riding gear and it gave good results.

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Nikwax Tech Wash 34 fl. oz Tech Wash Technical Cleaner for Jackets and Outerwear, Restores Waterproofing in Rain, Ski, and Snow Gear, Safe for Gore-Tex and DWR

Product ID: 4990728

Details

Brand
Nikwax
Item Form
Liquid
Material Feature
Scent
Unscented
Specific Uses For Product
Cleaner for

🌿PFAS-free & eco-friendly

💧Restores water repellency

🧼Deep cleans technical fabrics

SAR 223

Duties & taxes included

In stock

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Description

💦 Clean smarter, stay drier — your jacket’s secret weapon!

SAFE FOR PREMIUM OUTERWEAR - Compatible with Gore-Tex, Patagonia, Arc'teryx, and other top brands.
ECO CONSCIOUS CLEANING POWER - Water-based, PFAS-free formula with no optical brighteners or added scents.
EFFORTLESS WASH IN APPLICATION - Just one cap per load—machine wash safe for hassle-free gear care.
REVIVE YOUR GEARS PERFORMANCE - Effectively removes water-attracting residues without harming DWR coatings.
BOOST BREATHABILITY WATERPROOFING - Restores fabric breathability while enhancing water repellency for all your adventures.

Nikwax Tech Wash is a 34 fl. oz. technical cleaner designed specifically for synthetic outerwear and gear. It safely cleans without damaging durable water repellent (DWR) coatings, restores water repellency, and revives breathability. PFAS-free and water-based, it’s safe for premium brands like Gore-Tex and Patagonia, making it the go-to solution for maintaining high-performance rain, ski, and snow apparel.

Specifications

ASIN	B0019GL7ZG
ASIN	B0019GL7ZG
Best Sellers Rank	#55,404 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #35 in Shoe Cleaners
Brand Name	Nikwax
Customer Reviews	4.6 4.6 out of 5 stars (5,648)
Date First Available	January 12, 2004
Department	unisex-adult
Global Trade Identification Number	00703861000034
Item Form	Liquid
Item Volume	1000 ml
Item Weight	2.1 pounds
Item model number	183
Manufacturer	nikwax
Manufacturer	nikwax
Material Features	Non-Persistent
Material Type Free	PFAS-Free
Model Number	183
Number of Items	1
Part Number	183
Product Benefits	Effective cleaning, fabric care, stain/odor removal
Product Dimensions	9.4 x 3.4 x 3.1 inches; 2.13 pounds
Recommended Uses For Product	Travel
Scent	Unscented
Size	34 Fl Oz (Pack of 1)
Special Features	PFAS-Free
Specific Uses For Product	Cleaner for technical apparel and gear
Surface Recommendation	Synthetic
UPC	703861000034
Unit Count	34 Fluid Ounces

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