Boat Cleaner, Stain, Grime Remover for Boats, RVs, Campers

Slimy Grimy is a marine cleaning line built around a simple idea: tough stains should not require harsh acids or hours of scrubbing to remove. Unlike many conventional boat cleaners that rely on caustic chemicals, our formulas are designed to break down algae, mildew, rust, and oxide stains while remaining gentler on the surfaces you are cleaning. Most users simply spray it on, let it work, and rinse, often with little to no scrubbing needed. We have been family-owned since 1972, and that history shows in how the product performs season after season. Boat owners who switch from acid-based cleaners tend to notice the difference immediately, both in results and in how much easier the process feels.

It depends on what you are dealing with. Our original Granular and Liquid formulas target algae stains, waterline buildup, mildew, and rust, making them the go-to choice for hull cleaning. If you are fighting engine or equipment grease, Greasy Grime is built specifically for oil and grime buildup around motors and mechanical parts. Bug Splatter Batter handles the baked-on insect residue that collects on hulls, windshields, and exteriors after long runs. Blazin’ is formulated for more stubborn, heat-set grime. If you are unsure which one fits your situation, think about the source of the stain first, since matching the formula to the cause almost always gives you the fastest, cleanest result.

Yes, our formulas are made with marine surfaces in mind, including fiberglass, aluminum, and painted hulls. Many customers specifically choose us because harsher acid washes can dull gelcoat, strip wax, or eat into paint over time, while our products are designed to lift stains without that kind of damage. That said, we always recommend testing on a small, inconspicuous area first, especially if you are working with an older paint job or an unfamiliar surface. Rinsing thoroughly after application also helps protect the finish. Boat owners have used Slimy Grimy for decades specifically because it treats the surface with more care than traditional caustic cleaners, letting them clean confidently without worrying about long-term wear.

Yes, we ship across the United States, and our products are also trusted by boat owners throughout Canada. Orders placed through our website are fulfilled directly from our headquarters in Katy, Texas, so you are getting authentic product straight from the source rather than a third party. This matters because imitation cleaners have shown up in the market over the years, and buying direct is the surest way to know you are getting the real formula our customers have relied on for decades. If you run a marina, dealership, or repair shop and need regular shipments, it is worth asking about our dealer pricing, since we work with distributors who want to keep this product stocked for their own customers.