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303 Mold & Mildew Cleaner + Blocker

Bleach-free mould and mildew stain cleaner

303 Mold & Mildew Cleaner + Blocker

SKU 303-30573 Ask a question

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£14.99

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Size 473ml

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303 Mold & Mildew Cleaner + Blocker 303 Mold & Mildew Cleaner + Blocker £14.99
Click & Collect: Ilkeston · FreeMost eligible orders are ready within 5 minutes during opening times. Please wait for your collection-ready confirmation before travelling. Click & Collect: Ilkeston Not available for this option. Options that can be collected show it here. How it works

303 Mould & Mildew Cleaner + Blocker quickly and safely cleans and removes tough mould and mildew stains from water-safe surfaces.

  • Removes tough mould and mildew stains
  • Helps stop stains returning on treated areas
  • Contains no bleach or harsh chemicals
  • Leaves a fresh scent behind
  • Helps remove unpleasant odours
  • Safe on vinyl, plastic and painted surfaces
  • Can be used on water-safe fabric
  • Suitable for indoor and outdoor use
Read the full description

Full Description

303 Mould & Mildew Cleaner + Blocker quickly and safely cleans and removes tough mould and mildew stains from water-safe surfaces.

This product removes existing mould and mildew stains and also helps prevent mould and mildew stains from re-occurring on the treated surface.

Unlike other mould & mildew cleaner products on the market, this product does NOT contain bleach, and will leave behind a fresh scent.

It works safely on vinyl, plastic, painted surfaces and can be used on fabric.

#30573

More in Odour & Smoke Eliminators.

Royal Mail Tracked 24 from £3.95, free on orders from £100.Delivery details

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Key features

  • Mould Stain Remover
  • Bleach Free
  • Fresh Scent
  • Stain Blocker
  • Water-Safe Surfaces

The Drivers HQ

Expert Notes

303 Mould & Mildew Cleaner + Blocker is a bleach-free cleaner for mould and mildew stains on water-safe surfaces, and it also helps stop those stains returning on the treated area. It works on vinyl, plastic and painted surfaces and can be used on fabric, which makes it useful for boat interiors, outdoor cushions, bathrooms and other damp areas. Spray, scrub with a soft brush or microfibre towel, leave it for 1 to 2 minutes, then wipe or rinse off, repeating on heavier stains. It helps remove odours and leaves a fresh scent. Pair it with a soft upholstery brush, clean microfibre towels and, on vinyl, a UV protectant once dry. Always deal with the source of damp as well.

Perfect For / Suitable Surfaces

  • Vinyl
  • Plastics
  • Painted surfaces
  • Water-safe fabrics
  • Boat interiors
  • Outdoor furniture and cushions
  • Bathrooms and damp areas

Caution: Use only on water-safe surfaces and test on a hidden area of fabric first. Do not mix with bleach or other cleaning chemicals.

Technical Specifications

Product Type
Mould And Mildew Cleaner
Brand
303
Scent
Fresh Scent
Size
473ml (16oz)
Use
Indoors And Outdoors
Suitable For
Water-Safe Vinyl, Plastic, Painted Surfaces And Fabric
Application Method
Spray, Scrub With Soft Brush Or Microfibre, Wipe Or Rinse Off
Free From
Bleach And Harsh Chemicals
Maker Code
30573
Action
Cleans Stains And Helps Block Their Return
Typical Uses
Boats, Outdoor Furniture, Bathrooms And Other Damp Areas
Dwell Time
1 To 2 Minutes

How To Use

Application

  1. Shake the bottle well before use.
  2. Spray onto the affected surface.
  3. Scrub with a soft-bristle brush or a microfibre towel.
  4. Leave it to penetrate for 1 to 2 minutes.
  5. Wipe or rinse off with a clean, damp microfibre towel.
  6. Repeat on heavier stains, as reapplication may be needed depending on their severity.

Aftercare

  1. Let the treated area dry fully and keep it ventilated.
  2. Rinse brushes and wash microfibre towels after use.
  3. Check treated areas regularly, especially after damp weather.
  4. Treat new marks early before they set into the surface.
  5. Store the bottle closed and upright, away from heat and frost.

Top Tip: Find and fix the source of damp, such as a leaking seal or poor ventilation, before treating the stains.

Performance Benefits

  • Removes stains on contact
  • Neutralises odours with a fresh scent
  • Cleans vinyl, plastic and painted surfaces
  • Can be used on fabric
  • 1 to 2 minute dwell before wiping
  • Suits indoor and outdoor use

Frequently Asked Questions

Does it contain bleach?

No, 303 Mould & Mildew Cleaner + Blocker does not contain bleach and leaves a fresh scent behind. The UK 303 Car Care site also describes it as free from harsh chemicals.

What surfaces can I use it on?

It is for water-safe surfaces, including vinyl, plastic and painted surfaces, and it can also be used on fabric. Test a hidden area of fabric first.

Does it stop mould coming back?

It helps prevent mould and mildew stains from re-occurring on the treated surface. Dealing with the source of damp and keeping the area ventilated matters too.

How long should I leave it on?

Leave it to penetrate for 1 to 2 minutes after spraying and scrubbing. Then wipe or rinse it off with a clean, damp microfibre towel.

Does it help with odours?

Yes, 303 states it helps remove odours, and it leaves a fresh scent behind.

Can I use it indoors?

Yes, the UK 303 Car Care site describes it as safe to use indoors or outdoors, for example on boat interiors, patio cushions and bathroom surfaces.

What size is it?

303 Mould & Mildew Cleaner + Blocker comes in a 473ml (16oz) bottle, maker code 30573.

HQ Suggests Tips & Insights

  1. Brush off loose dirt and debris before spraying the stain.
  2. Work on cool, shaded surfaces so the product does not dry out.
  3. Use a separate towel for mould work and wash it straight afterwards.
  4. Repeat on stubborn stains rather than scrubbing harder.
  5. Test on a hidden area before treating fabric.
  6. Air out enclosed spaces such as boat cabins after cleaning.
  7. Keep cushions and covers dry before storing them away.
  8. Order online with UK-wide delivery from The Drivers HQ.

The Brand

303

303 is an American surface protection brand that has been a trusted name in its field since 1980. Its protectant was first developed to protect aircraft rubber wing boots at high altitude, and the formulas now care for cars, boats, RVs and outdoor gear. Since 2012, 303 has belonged to Gold Eagle Co., the Chicago company behind STA-BIL, which says its branded products, 303 included, are manufactured in the United States at its facilities in Chicago. The brand line is Proven to Protect.

At The Drivers HQ we stock 303 online with UK delivery and in our Ilkeston shop. Popular choices include 303 Aerospace Protectant, the Automotive Speed Detailer and the Slick Shine Ceramic Detailer.

Shop all 303
303 Speed Detailer, Protectant Wipes, Aerospace Protectant and Wheel & Tire Cleaner on a black display plinth

303 protectants, trim and leather care

Aerospace Protectant. The product 303 is known for, in 296ml, 473ml and 946ml. 303 describes it as a water-based formula with no petroleum distillates, alcohol, mineral oil or harmful silicone oils, which dries to a clear matte finish, blocks UV to help stop fading and cracking, and repels dust and stains. It suits vinyl, plastic, rubber, finished leather and fibreglass, but not clear plastics, suede, fabrics, flooring, gauge panels or headlights. Spray it onto a clean, dry surface out of direct sun and wipe it completely dry, because it does not air dry; 303 says to reapply every 30 to 45 days. The same protection comes as Automotive Protectant 473ml and in a tub of 25 Protectant Wipes.

Trim, seals and tyres. Rubber Seal Protectant comes in a 101ml bottle with an applicator for door, window, bonnet and boot seals, and helps them keep their elasticity. Graphene Trim Coating is a non-greasy coating for faded trim that 303 rates at up to 6 months, and Tyre Coating & Protectant is a water-based, sling-free aerosol that dries to a satin shine with no brush needed.

Leather. A two-step system: Leather Cleaner lifts stains and preps the surface, then Leather Conditioner softens the leather and adds UV protection that 303 rates at 30 days. Both suit finished and unfinished leather.

Fabric and stains. Multi-Surface Cleaner removes spots of coffee, oil, grease and ink from water-safe surfaces, and Mold & Mildew Cleaner + Blocker removes mould stains without bleach. Fabric Guard restores water and stain repellency to outdoor fabrics, such as a convertible roof's seams, and is not for interior fabrics.

Shop more plastic and vinyl protectants, trim dressings and leather cleaners.

303 Speed Detailer being sprayed onto the bonnet of a blue car on a driveway

303 detailers, coatings and wheel cleaners

Between washes. The Automotive Speed Detailer is mist-on, wipe-off gloss for paint, plastics, fibreglass, chrome and glass, with anti-static properties and UV blockers. The Slick Shine Ceramic Detailer is infused with SiO2 and carnauba wax, works on wet paint as a drying aid or on dry paint, and is safe on matte paint. The Graphene Detailer tops up existing coatings, works wet or dry and lasts up to 90 days, and the Automotive Spray Wax cleans off water spots and dust and leaves protection rated at up to 90 days.

Coating. Graphene Nano Spray Coating is a graphene oxide based spray coating that 303 rates at 12 months. It is strongly hydrophobic, helps reduce water spots by lowering the surface temperature, can be applied in direct sunlight and also goes on glass, wheels and trim.

Wheels. Wheel & Tire Cleaner is a foaming, acid-free and non-corrosive cleaner for wheels and tyres: spray onto cool, rinsed surfaces, leave for 2 minutes, agitate and rinse. Heavy Duty Wheel Cleaner is acid free too, removes brake dust and caked-on dirt, and also works as a paint decontamination spray for embedded fallout before polishing.

Shop more quick detailers, paint sealants and wheel cleaners.

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