Traveling with plants attached to your boat/trailer in Washington State is:

It only takes one plant fragment to start a new population of Eurasian watermilfoil.

Zebra and quagga mussels attach themselves to hard surfaces tightly like superglue and are very difficult to remove without high pressure, hot water.

In the state of Washington you can be fined for towing a boat/trailer on the road with plant fragments attached.

Aquatic invasive species can clog water intake pipes and impede the flow of water to municipal water supplies, irrigation operations, and power plants.

What is the best way to dispose of aquatic plant fragments that you remove from your boat?