Biokleen Black Streak Remover concentrated cleaner for RVs & boats 1 Gallon — no-rinse streak-free finish

Biokleen Black Streak Remover is a concentrated cleaner that quickly lifts black streaks and surface soils from RVs, boats, trailers and other hard exterior surfaces with no-rinse results.

Designed for exterior maintenance, this 1-gallon (128 fl oz) formula targets the dark lines and stubborn marks that form on gelcoat, painted metals and coated surfaces. It’s formulated to dissolve road grime, exhaust staining and organic streaks so you can restore an even, streak-free finish without heavy scrubbing. Because it’s concentrated and easy to apply, it’s a practical choice for seasonal cleaning or spot treatments between full washes.

How do I use Biokleen Black Streak Remover safely and effectively?

Apply to a dry, clean cloth, towel or dedicated wash brush and work section by section, starting from the bottom and moving upward. Add product as needed, wipe or brush the streak away, then complete the cleaning sequence by washing with a mild detergent like Super Suds and rinsing from the top down.

• Spray onto cloth or brush—do not apply to old, unmaintained paint without testing first.
• Work in small sections for best control and even coverage.
• Follow with soap (Super Suds recommended) and rinse thoroughly.

Which surfaces can I treat with this remover and what should I avoid?

The formula works on a wide range of hard exterior surfaces, including fiberglass gelcoat, painted metal and common RV and boat exteriors. However, it may lift or affect poorly adhered or aged paint and coatings, so always test a discrete area first before full application.

• Suitable: gelcoat, painted aluminum, fiberglass and coated trailers.
• Not recommended: aged or flaking paint, untested porous finishes.
• Always use a dedicated brush and bucket for each product to prevent cross-contamination.

Will I need to rinse after using this product and how much elbow grease is required?

Biokleen’s remover is formulated to leave minimal residue and does not require an immediate rinse after streak removal, but a follow-up wash with a vehicle-safe soap and a full rinse is part of the recommended process. Most marks lift easily with light wiping or brushing; tougher, older streaks may need an extra application or gentle agitation.

• No chemical rinsing step required immediately, but wash and rinse afterward.
• Light wiping typically suffices; persistent stains may require repeat treatment.
• Use soft cloths or a nonabrasive brush to avoid surface damage.

How should I store and handle this gallon container?

Keep the product in a cool, dry place away from direct sunlight and out of reach of children and pets. Use personal protective items—gloves and eye protection—if splashing is possible, and never mix with other cleaners unless the directions instruct it.

• Store upright, sealed, in a ventilated area away from heat sources.
• Use separate brushes/buckets to avoid cross-contamination of cleaning chemistries.
• Test on a small inconspicuous area before broad application.

Who is this for? Biokleen Black Streak Remover is intended for owners and caretakers of RVs, boats, trailers and similar vehicles who want a targeted solution for black streaks and exterior marks without heavy abrasion. It suits DIYers, fleet managers and seasonal detailers looking for a concentrated, easy-to-apply product for spot removal and preparatory cleaning, provided they test on older finishes and follow safe handling directions.