1-gallon liquid hull cleaner
Targets common hull staining
Wipe-on, rinse-off application
Clearly identified MPN: 81700
1-Gallon Liquid Hull Cleaner for Targeted Boat Care
Identify the stain, check the surface and choose the right cleaning approach.
Choosing a boat hull stain remover starts with understanding the marks you want to treat. Consider their appearance, the underlying hull material and any coatings or nearby components that need protection during cleaning.
This 1-gallon liquid hull cleaner provides a wipe-on, rinse-off format for the cleaning tasks listed on its label. Review those instructions before application so you can plan the treatment, freshwater rinse and any additional work needed for stubborn areas.
The gallon package is worth considering when comparing how much product to purchase for your maintenance plans. Actual consumption varies with the area being treated, application method and stain severity. Package size alone does not establish how many boats or cleaning sessions one container will cover.
Use the specifications, surface guidance and application information on this page to check your selection. If you are comparing this liquid with a gel cleaner or a smaller package, review each product’s individual directions before deciding.
Clear Product Details
Review the 16 oz gel format, specifications and application directions.
Surface Guidance
Check fiberglass, gelcoat and finish suitability before use.
Product Support
Ask about your surface and stain type before ordering.
Shipping & Returns
Review shipping information and return conditions before purchase.
HULL CLEANING TASKS
Understand the Stain Before You Start
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Rust Stains
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Leaf & Organic Marks
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Yellowing & Scum Lines
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Liquid Application Format
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1-Gallon Package
Choose the Hull Cleaner Size and Format That Fits Your Task
Hull Cleaner Selection & Preparation Guides
What Customers Say
Effortlessly removes tough waterline scum and yellowing
Star brite Instant Hull Cleaner 1 Gallon (MPN 81700) made end-of-season hull washing incredibly fast. The wipe-on, rinse-off formula effortlessly dissolves stubborn grassy scum lines, rust stains, and waterline yellowing without demanding heavy scrubbing.
Economical 1-gallon size ideal for larger boats
Buying the 1-gallon jug is much more economical for cleaning a 30-foot hull. Simply apply it with a sponge or sprayer, let it dwell for a couple of minutes, and hose it off with fresh water to reveal bright white fiberglass.
Cleans scum and exhaust residue without damaging gelcoat
This wipe-on cleaner works wonders on stubborn waterline staining and exhaust residue near the transom. It neutralizes mineral deposits and marine scum instantly without etching or dulling the gelcoat.
Saves hours of heavy scrubbing during haul-out detailing
An absolute essential for seasonal boat detailing and haul-outs. The gallon capacity provides plenty of cleaner for multiple washdowns, eliminating the need for harsh abrasive pads or heavy compounding.
Well-packaged container and powerful marine cleaner
The 1-gallon jug arrived quickly and tightly sealed with no leaks. Applied it directly to heavily stained fiberglass hull sides, and it restored the finish to like-new condition with minimal effort.
Frequently Asked Questions
Is this the liquid or gel hull cleaner?
This product is the 1-gallon liquid hull cleaner, manufacturer part number 81700. The gel formula is listed separately.
How much liquid is in the gallon container?
The package contains 1 US gallon, equivalent to 128 US fluid ounces or approximately 3.78 liters.
How does the gallon compare with the 32 oz package?
The gallon contains four times the volume of the 32 oz liquid package. Compare current prices and the quantity you want to purchase before choosing a size.
Does the gallon package include a sprayer?
Do not assume a separate sprayer or applicator is included. Check the product images and package information before ordering additional application equipment.
How much hull area will one gallon cover?
A verified coverage figure is not provided here. Consumption depends on the treated area, application method, stain severity and whether repeat treatment is needed.
Can I use the gel cleaner’s instructions for this liquid?
Use the directions supplied with this liquid hull cleaner. Different product formats may have different instructions and precautions.
Where can I check directions before buying?
Review the application section on this page and the linked manufacturer information. The label on the supplied container governs use.
What should I check before choosing a hull cleaner?
Identify the hull material, coating and cleaning problem. Then compare that information with the product label rather than choosing solely by package size.
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