Welcome to the Slimy Grimy Boat Cleaning Guides hub! Whether you are a seasoned sailor or a new boat owner, keeping your vessel in pristine condition is essential for its performance and longevity. Explore our comprehensive guides below to find expert tips, step-by-step instructions, and the best solutions for all your marine maintenance needs.
The Guides Catalog
Every hull, every stain, every finish — find the write-up built for the job in front of you.
GUIDE
NO. 01
Discover the best techniques to safely remove oxidation, restore that original shine, and protect your aluminum hull from the elements.
GUIDE
NO. 02
Pontoons require special care. Learn how to tackle stubborn algae build-up and keep your pontoon tubes looking spotless all season long.
GUIDE
NO. 03
Tired of scrubbing stubborn scum lines? We break down the easiest ways to dissolve tough brown waterline stains without damaging your gel coat.
GUIDE
NO. 04
Unsure which type of Slimy Grimy cleaner to use? Compare the benefits of granular and liquid formulas for your specific boat cleaning tasks.
Two formulas, one job: gone-for-good grime. Pick the format that fits how you clean.

Perfect for heavy-duty stains, large areas, and deep cleaning.

Convenient, ready-to-use formula for quick touch-ups and spot treatments.
A light rinse after regular use helps prevent buildup, but a deeper cleaning is recommended whenever you notice waterline stains, algae stains, rust or other stubborn buildup. Many boat owners also do a thorough cleaning at the beginning and end of the boating season or after the boat has been left in the water for an extended period.
Yes. Slimy Grimy is safe for use on fiberglass and gel-coated boat surfaces when used as directed. As with any cleaner, we recommend testing a small, inconspicuous area first and rinsing thoroughly after use.
Apply Slimy Grimy to the stained area and allow the product time to work before rinsing thoroughly. Waterline stains, algae stains and rust are exactly the types of buildup Slimy Grimy is designed to remove. Stubborn or long-standing stains may require a second application or light scrubbing with a soft brush.
Slimy Grimy can be used on many painted surfaces when used as directed. For older, custom or unfamiliar finishes, we recommend testing a small, inconspicuous area first and rinsing thoroughly after cleaning.
Don’t let grime ruin your time on the water. Stock up on the industry’s best marine cleaners today or contact our team if you have a specific cleaning challenge!