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They have been used in brands such as Stainmaster, Scotchgard, Teflon, Gore-Tex, and Tyvek, according to the environmental department.

In the 1950s, Minnesota-based chemical maker 3M launched Scotchgard that used fluorochemicals to make fabrics water- and stain-repellant.

As she unpacked the items, her father grabbed the can of Scotchgard and told her, "Don't you ever use this!"

If the material will be ok with it — don't forget about that handy spot test — using a protectant like the Scotchgard Fabric Water Shield to keep liquid-based stains from ever settling in on your furniture could be a great first line of defense.

Now as they listen to Vaughn discuss the porousness of wool, and the difference between Scotchgard and sanitizer, they can’t help but look at him differently.