Do I need my muscle inspection sticker?

I just got the new registration stickers for my dinghy, and noticed they came with muscle inspection stickers, to be applied next to the registration.

The thing is, I only use the boat in salt water, and I’m pretty sure zebra mussels don’t live in salt water.

Am I required to adhere the muscle inspection stickers to the boat, even though the hull will never see freshwater?

Also, I never got the boat inspected for muscles, so how the heck do they know I had it done at all??

- W