TORNADO CLEANZE – Thick softwash gel: Rapidly removes ingrained black & red stains, e.g. "black spot".

Ex vat $44.00 USD

Tornado Cleanze rapidly removes ​​biocidally pre-treated "black spot" (black algae & lichen) and other hard-to-remove stains


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Delivery time: 1-4 working days


This product worked very well indeed. This was our first experience using Tornado Cleanze. We chose to use it on quoins and coping stones. Both were natural sandstone. Adhesion and quality were paramount on this job – and we were not disappointed.
James Gibbon, C G Clean Down Ltd  



"I had some very good results with Tornado Cleanze on a rendered wall – and the valuable roses at the base of the wall are still flourishing!"
Adrian Brooks, Home Soft Wash

Are you experiencing difficulty removing heavy red and black algae/lichen stains using only conventional cleaning products? You've probably found that even standard soft washing cannot remove particularly deep staining.

Tornado Cleanze is the solution you've been looking for. Tornado Cleanze easily, quickly and safely removes stubborn black, green, red and yellow staining from external hard surfaces after they have been treated with an officially approved and licensed biocide (e.g. Benz Lightning Cleanze or Bio Cleanze)

And its rapid, precisely targeted cleaning action, combined with it's exceptional adhesion properties, means there's no overspray or spray drift onto surrounding properties and plants.

What is Tornado Cleanze?

Tornado Cleanze is a non-penetrating – and yet very strong and effective – cleaning gel that stays on the surface of the material being treated. This gives it a long contact time with unwanted staining and a remarkable power to remove discolouration.

It is particularly useful for "spot-cleaning" of particularly heavy staining following a biocidal treatment with Benz Lightning Cleanze or Bio Cleanze.

How it works

Tornado Cleanze speeds up the natural oxidising effect of the UV rays in sunlight. It oxidises the staining caused by dead algae (sometimes called "metabolites"), which forms as part of the natural biochemical process of degrading and eliminating the compounds.

Quick tip: In biochemistry, a metabolite is an intermediate or end product of "metabolism", which is a name for the chemical reactions occuring in organisms.

Simply brush on, leave for 15-60 minutes, and rinse – Tornado Cleanze acts fast!





Tornado Cleanze cleans stone_slabs_white_spots_lichen_dots_algae

The perfect partner

Tornado Cleanze is the perfect partner for use in conjunction with Benz Lightning Cleanze biocide. It can be used as a topical spot cleaning agent after giving a biocidal treatment with Lightning Cleanze, e.g. for removing any remaining black stains and streaks from render.

Ongoing maintenance: To keep surfaces permanently clean all year around, after thoroughly rinsing off Tornado Cleanze and Lightning Cleanze, it's important to post-treat with Benz Bio Cleanze and to set up an ongoing "Clean & Maintain" service for your customer.

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I bought Tornado Cleanze for a contract to help clean the exterior walls and pillars of a private residential estate after pre-treating with Benz Lightning Cleanze biocide.

The results, as you can see in the photo below, were excellent and my customer and other residents were delighted, often stopping to remark on how much better the walls look.

Btw: The railings were removed at the time of cleaning for maintenance and painting, which is why they are missing in the after photo.

Keiron Bradley, Gleam Team Cleaning Services & Garden Maintenance

Benz Tornado Cleanze, brickwork softwash cleaning treatment 

Packaging & Shelf Life

Tornado Cleanze comes in sturdy, drop-tested 5 litre containers.

It remains usable for 5+ months after manufacture, when stored in a cool location, in the original, unopened container.

And our tests show that even when opened and some has been used, Tornado Cleanze will be usable for 2+ months, when the cap is tightly replaced and stored in a cool location.


Tornado Cleanze has the cleaning POWER you need to remove those really tough ingrained stains - fast!



Tornado Cleanze is a concentrated, ready-to-use gel. A little goes a long way. 1 litre will cover 6 metres2 of render or brickwork, 10 metres2 of sandstone, or 10 average capping stones.

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By brush or roller, or a combination of both. Ensure a thin film is left on the surface.

Tornado Cleanze can be diluted and sprayed, although this is not its intended use. A better practice is to use Lightning Cleanze if a spray application is required (e.g. for treating large areas of wall render, car parks, driveways, etc).

Quick tips

1) Loose dirt and debris must be removed to allow a pre-treatment of Lightning Cleanze biocide to kill the biofilm, followed by an application of Tornado Cleanze to remove any remaining ingrained stain. A light jet wash before giving a treatment is ideal but not essential. You could also use a simple hosepipe and broom.

2) A light pre-wetting of the surface to be treated makes application by brush or roller faster and easier. We also suggest lightly pre-wetting a surface after prolonged dry periods and in very hot direct sunlight.


Applying Tornado Cleanze-stone-path-algae-white-lichen-spots-dots

Ideally, apply in temperatures of 8-30 degrees C. Allow longer for Tornado Cleanze to work in cooler temperatures. In very hot weather, cool down surfaces by lightly pre-spraying with cold water.

Quick Tips

  • If the surface is warm, pre-wet it with a light spray of ordinary cold tap water before commencing treatment. If very hot, continually dampen the surface during the activation period.
  • Because Tornado Cleanze is a gel, it stays where it’s applied, even on vertical surfaces such as render, and is slow to evaporate.
  • If the discolouration is particularly bad, gently agitate with a soft brush after 10-15 minutes.
  • Protect areas that could be affected by spillages or run-off after rinsing, e.g. lead flashing.
  • Rinse thoroughly after activation.

Important: Be sure to protect plant life from drops or accidental spillage. Click here to learn the simplest, most effective way to protect plants when soft washing.

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Black and green discolouration will disappear from most surfaces within 15-60 minutes in mild temperatures, a little longer in cooler weather. Heavy red stains may turn pink at first, then fade in 24-48 hours. Sometimes, a second application may be required.

Quick tips

Enable your customers to enjoy permanently clean properties

Bio-Cleanze-algae-lichen-moss-mould-kill-controlKeep the external hard surfaces of properties permanently clean by using Benz "Clean & Maintain" softwash systems.

After initial cleansing with Lightning Cleanze and Tornado Cleanze, a quick and simple spray with Benz Bio Cleanze every 6-24 months is usually sufficient to keep properties clean all year around.

Quick tip: Depending on the severity of the staining a gentle brushing is sometimes beneficial.

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Why Tornado Cleanze is safer and more effective than bleach mixes *

  • There is almost no smell compared to bleach mixes, because the special formula reduces chloramine emissions, which means there is no need for a masking scent.
  • It is safer because its thick gel nature means there is a low likelihood of the product coming into contact with surrounding properties, vehicles, people, animals, plants – and splashing onto softwash contractors themselves.
  • The highly specialised gelling agent ensures Tornado Cleanze sticks to surfaces longer, with near zero run-off prior to rinsing. This increases the contact time with unsightly stains, ensuring maximum effectiveness in removing them.

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Keep Tornado Cleanze cool to extend its shelf-life

  • Vans get hot inside during the summer months, so remove Tornado Cleanze containers and place them in a shaded area on the site.
  • Metal and wooden sheds also heat up, so find a cooler location for storage.
  • Use a an old insulated chest freezer to keep Tornado Cleanze cool, but not freezing, away from sunlight.
  • Use a picnic cool box with an iceblock. These can often accommodate two 5 litre containers of Tornado Cleanze.
  • Children and animals must be prevented from gaining access to freezers and other chemical containers.

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Delivery Restrictions


Due to restrictions placed by shipping companies, we are unable to deliver even to some UK offshore locations through our standard shipping arrangements.

These include (but are not limited to):

• Isle of Man
• Isle of Wight
• Channel Islands
• Scottish Islands

Orders placed for these locations, and not previously cleared by us, will have to be cancelled. If you need products delivered to one of the above areas, contact us and we'll do our best to help you, but do note that surcharges will have to apply.

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Health & Safety

  • NEVER mix Benz Tornado Cleanze and Benz Bio Cleanze/Perma Cleanze together as toxic gas may be produced.
  • ALWAYS thoroughly rinse application equipment before changing from Tornado Cleanze to Bio Cleanze/Perma Cleanze and vice-versa.
  • EXCLUDE customers, the general public, children and animals from areas where application, mixing and storage of chemicals is taking place by erecting barriers and tape. And keep them excluded until the treated area has been declared safe. Use of a staff member to control access to the worksite is advised.
  • Respiratory protection is not required when there is adequate ventilation, which is usually the case in outdoor environments. In poorly ventilated areas wear appropriate respiratory protection ( refer to the SDS for our currently recommended type).
  • Discharge rinse water in accordance with local by-laws and water authority regulations.
  • If swallowed, do not induce vomiting. Contact a doctor or a specialist immediately.
  • Refer to the product SDS for specific guidance.
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The purchaser and end users are responsible for ensuring that our products are used in line with industry Approved Codes of Practice. All operators must be competent in using and applying our products. Always adhere to the SDS, and read and comply with the instructions for use on the label, and product information on this website, before use to avoid injury to humans and animals. The purchaser and end user of these products are responsible for complying with the PRCD/HSE codes for the safe use of chemicals.

Safe working practices: When working with chemicals always keep your equipment and personal protection equipment (PPE) clean. Take care to protect yourself and the public from accidental contact with eyes and skin. Wear chemical resistant protective gloves, chemical resistant clothing that covers your whole skin surface, and a full face visor that includes protection for your hair. Wash all PPE with fresh water at the end of the working day and before eating, drinking, or smoking.

Always treat a small, out of the way test area before using any chemical cleaning product. Obtain your customer's agreement that the result is acceptable and get their permission to continue before cleaning their entire property.

Formulated to be legal and safe* for use by cleaning contractors and property maintenance staff



    * Safe when used according to product labelling instruction and the recommendations on this website.

    Order Benz softwash chemicals & equipment online or by phone:

    GB (England, Scotland, Wales)

    Phone: 0800 70 74 222 


    Ireland and other countries

    Phone: 00353 214 622 978


    Lines open Monday - Friday, 9am – 5pm

    The above numbers are for orders only (click here for tech support)


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