 Daria Albinger, ABC News. Invasive plants and animals threaten Alaska's waters and can spread to new locations by hitching a ride with you. Help stop aquatic hitchhikers. Clean your boots, boats, and trailer to remove plants, animals, and mud. Drain your bilge, ballast, and buckets before you leave the area. Dry your equipment before using it in a new body of water. Be a good steward. Clean, drain, dry. For more information, visit StopAquaticHitchhikers.org.