Not a float flyer but boat owner in Southern California
Here its Quagga Muscles. They are not native , can clog up the largest pumps, valves and pipelines. They are in some lakes, but not all. And most lakes here supply drinking water.
I work for The City of San Diego Public Works and its a costly nightmare .
Of course rate payers pay for the replacement of any clogged passageways.
So if I take my boat from San Diego to someplace like Big Bear the boat is inspected and decontaminated if needed before you can put in the water.

Quagga are like a small clam They start looking like barnacles because they attach to each other and yes they can clog a 36 dia pipe.

So you can see why a small municipal water district would want to inspect anything that occupies their reservoir

Potassium chloride (water softening salt) is effective against clams and mussels. A teaspoon per couple of gallons is literally all that is needed. It is not as corrosive for aluminum like bleach is. A 12 hour exposure (overnight), including the bilge pumps, is virtually 100% effective, and the brine is not toxic to aquatic life like bleach. It does nothing for invasive plants, though. My SES instructor was already doing this 31 years ago, since clams and some plants were already an issue there (WA). I haven't heard anyone else mention it ever since in the context of their instruction.