What you should do

Invasive plants, animals and diseases can harm lakes, rivers, streams, wetlands, water quality, and wildlife habitat. People can unintentionally spread invasive species by moving boats, gear, and equipment from one waterbody to another or releasing non-native species into the environment. No matter how you enjoy the outdoors, always take these actions to prevent the spread of aquatic invasive species (AIS).

Whether or not a lake has invasive species, Minnesota law requires people to: 

  • Clean watercraft, trailers, gear, and equipment to remove aquatic plants and prohibited invasive species. 
  • Drain all water and leave drain plugs out during transport. 
  • Dispose of unwanted bait in the trash. 
  • Never release bait, plants, or aquarium pets into Minnesota waters. 
  • Dry docks, lifts, and rafts for 21 days before moving them from one waterbody to another. 

These additional steps reduce the risk of spreading AIS: 

Clean In Clean Out Banner AIS
  • Decontaminate watercraft and equipment – find free stations on the courtesy decontamination webpage of the DNR website (mndnr.gov/decon).  
  • Spray watercraft and equipment with high-pressure water or rinse with very hot water (120 degrees for at least two minutes or 140 degrees for at least 10 seconds).  
  • Dry watercraft and equipment for at least five days before using in another water body.  


How do you enjoy Minnesota waters? Click an activity to discover how you can protect our lakes, rivers, streams, and wetlands from aquatic invasive species.  

Find more details about practicing "Clean In, Clean Out" here.

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