How to Care for Your Customer's Plant Life


Prevention is always better than cure. And the simplest way to care for your customer's plants and grass (including artificial grass – see below) is to minimise spray drift and run-off – and thus reduce the possibility of plants and grass coming into contact with softwash chemicals.

How to minimise the effect of spray drift and run-off

  • Gently cover particularly delicate plants that may be exposed to spray drift with a very light sheet. Take great care when covering so as not do damage plants with the sheeting. Do not use a heavy tarpaulin, as the weight of it could crush and damage your customer's plants.
  • Minimise spray drift by using the correct Benz nozzle. Our specialised nozzles help to contain the spray of softwash chemical to only the areas where it is needed.

  • Use skillful spray techniques to restrict the softwash chemical spray only to the surface being cleaned.

  • Divert run-off away from areas of plant life.

  • It is also important to drench all plant life that may be some distance away from the treated area but which could conceivably be affected by spray drift. This is because some plants are hyper-sensitive and their leaves will turn brown at the merest whiff of a biocide.

Protecting plant life and grass softwashingThe "3-Drench" method of preventing harm to plants and grass that may come into contact with softwash chemicals

Drench all vulnerable plants that could possibly be exposed to spray drift or run-off, with copious quantities of fresh tap water:

1) Immediately prior to applying a softwash chemical.

2) Immediately after application of a softwash chemical.

3) Immediately after rinsing the treated surface following treatment with Benz Lightning Cleanze or Tornado Cleanze (do not rinse Benz Bio Cleanze or Perma Cleanze)

Include all hedges, shrubs, grass, flower and vegetable beds that border paths and patios, or are next to wall that is going to be treated, and all other plant life that could conceivably be exposed to spray drift or run-off.

Drench all lawn edges that could be exposed to spray drift and run-off.

Pre and post drenching with a gentle and light spray – not a high pressure jet, which could damage plants – of fresh tap water washes the leaves of your customer's plants and dilutes the chemicals in the ground, reducing the potential for harmful effects to near zero. 

Quick tips:

  • Bio Cleanze is fully bio-degradable.
  • Lightning Cleanze and Tornado Cleanze are formulated with bio-degradable surfactants and do not bio-accumulate.

Mentioning these facts to your customers who may be wary of of having their gardens exposed to chemicals can go a long way to re-assure them that their plants will be safe.

  • If you are working as part of a team, have someone drench the area exposed to spray drift or run-off immediately you move on to clean another section of the property.
  • If you think an area of vegetation got a particularly heavy dose of spray drift, run-off, or accidental spillage, then soak the ground particularly thoroughly with fresh water to dilute the chemical.

We tested the drenching principle by spilling several litres of 5:1 Benz Lightning Cleanze onto a lawn, then immediately drenching the lawn. No ill-effects were noticed.

Quick tip: In our experience there is absolutely no need to post-treat your customer's plants with another product, such as liquid fertiliser.

  • Important: Plants vary in the type of nutrition they require, and some react badly to the wrong type. So spraying plants with a liquid fertiliser could be administering the wrong type of nutrition for your customer's particular plants – and therefore could actually be harmful to them.

Pre and post drenching with fresh water, combined with minimising spray drift and run-off with skillful application techniques, works just fine. It is the simplest, fastest, cheapest and most effective way of protecting your customer's plants.

Artificial grass

Lighting Cleanze – usually at 10:1 – is the simplest way to get dirty grass clean on the first treatment. Then offer your customer an ongoing "Clean & Maintain" programme consisting of regular treatments with Bio Cleanze.


How to softwash patios and paths close to a pond

  • Do not pressure wash if this means run-off will enter the pond. Because the water-dirt mixture from pressure washing could disturb the fish and frog spawn.

In most situations either Bio Cleanze or Perma Cleanze are going to be the safest option. Choose a time when rain is unlikely and will offer sufficient time for it to competely dry. By the time it rains again the softwash chemical will have biodegraded sufficiently so as to not be harmful.

  • That said, always allow a border zone of at least 500 mm from the pond's edge that is not treated, which doubly ensures that surplus product will not reach the pond.
  • Also, if children or animals are likely to walk on the treated surface use only a 50:1 dilution of Bio Cleanze (4:1 Perma Cleanze) and exclude them completely until it has been dry for several hours.

Ensure that all chemical containers are kept in a safe working area removed from the pond, and from which the public, customers, children and animals are excluded. Ensure that all chemical mixing is done in this safe area and any spillages are immediately cleared up.

    Controlled tests of the effectiveness of pre and post drenching plant life

    To ensure that in actual practice Bio Cleanze is safe for plant life, we conducted these tests using vastly more biocide than would ever be the case from spray drift or run-off.


    Area to left of above photo: We saturated the area with fresh water, then applied 2 litres of Bio Cleanze – 25:1 mix. We waited for 10 minutes, then rinsed off with copious fresh water.

    Area to right of photo: We did not first wash with water and did not rinse after applying the same quantity of biocide.



    One week later the dramatic results speak for themselves. The area we treated with water went slightly dark for a few days and some discoloration of the grass is noticeable but no plant life died.

    Note: We ran the same test with Lightning Cleanze and obtained similar results.

    These extreme tests – using quantities of Bio Cleanze and Lightning Cleanze far in excess of the dosage customer's plants could reasonably be expected to receive in working practice – conclusively proved the importance and effectiveness of pre and post drenching plant life before applying softwash chemical treatments. 

    A happy ending: Both areas of grass recovered fully without re-seeding. Even the area you see to the right of the photos recovered completely with the grass regrown in only a few weeks.

    Click here to learn how to protect children and animals when softwashing


      Learn more about soft washing via Benz Trade Tips – soft washing how-to videos and articles

      The Benz Softwash range of softwash cleaning products

      Explore the full range of Benz softwash cleaning products

      Benz Softwash Bio Cleanze DDAC biocide & Benz Softwash Lightning Cleanze SH sodium hypochlorite biocide