Marimo Moss Balls

Moss Balls Carrying Zebra Mussels

We warned back in March 2021 that Marimo Moss Balls were contaminated with Zebra Mussels. These moss balls are generally sold at PetCo. and PetSmart and other pet stores. If you are unfamiliar with Zebra Mussels we want to urge how serious of an impact these invasive species can have on our waterways in Wyoming.

Steps on How to Best Dispose of the Moss Balls

Your Moss Ball May Carry Invasive Mussels

Step 1. Remove any pets from the water and tank.

Step 2. Remove the ball, other plants and any water from the aquarium and put them in a heat-safe pot.

Step 3. Inspect the ball and tank for zebra mussels and if you find any contact your local Game and Fish regional office.

Step 4. Boil the balls, plants and any water it’s been in contact with for at least five minutes.

Step 5. Dispose of the ball and other plants in the trash.

Step 6. Pour out the boiled water on a semi-permeable surface. That could be a houseplant or outside – like grass or soil – not located near standing water or a storm drain.

What’s the Big Deal with Zebra Mussels?

Zebra Mussels are an invasive species native to the Black Sea and Caspian Sea in eastern Europe. Zebra mussels are filter feeders. They eat by sucking in water and filtering out all the nutrients, which impacts the ecosystem and fish populations.

What’s the BIG Deal with Zebra Mussels?