Can the groomers wash a cat that's been sprayed by a skunk?

Water dawn hydrogen peroxide

Wow I can't believe someone would tell another person this but for the love of God and your cat don't use hydrogen peroxide on your cat . I am an animal Care technician you will ruin your cats skin. Use tomato juice and Dawn dish soap & mix it together .

Tomato juice is a very good de-skunifier.

You would have to ask them. I would also call my vet & ask if they could help or suggest what to use.

I'd call for sure. Tomatoe bath can work great! If PetCo doesnt, they may have a name to give you of someone who can help, groom etc

They likely can, but I doubt they will. You'll have to call to verify as thats not a common occurrence.