How to control weeds after soft washing cobblelock block paving + paths & patios

best weed killer for block paving

After successfully treating surfaces such as cobblelock drives, and paved paths and patios, weeds will inevitably return over time. There is nothing that can be done to stop this except by applying some form of weedkiller.

But ... the law states that the commercial application of herbicides or pesticides (aka weedkillers) requires the person applying them be trained and licensed in their use. Taking this training and becoming legally certified to apply weedkillers is a good move for any soft wash contractor to consider. 

Quick tip: The environmental impact of some weedkillers, such as Monsantos's notorious glyphosate (aka Roundup), is extremely questionable. Many customers will not want them used on their property because of their probable negative impact on the food chain.

We've experimented with glyphosate, on our own gardens, and do not like it. There are numerous reports that weeds are becoming resistant to it and several countries have actually made it illegal.


IMPORTANT: Unless you are legally certified to work with pesticides and herbicides, we strongly suggest you do not offer advice or information to your customers as to their use. This includes giving advice about non-commercial weedkillers such as salt and horticultural vinegar (aka acetic acid).

If your customer wants to use a weedkiller to control weeds on their property we suggest you point them to the nearest garden centre – online or offline – and tell them to apply the weedkiller according to the product labelling instructions.


Click here to learn about getting trained and licensed in the application of pesticides and herbicides


The Benz Softwash range of softwash cleaning products:


Click here to get more practical soft washing how-to tips

How to find answers to most soft washing questions: Simply enter a relevant "keyword" or short phrase (e.g. keyword for above link = "how to") into our in-site Search Engine (the magnifying glass icon on main menu) 

You can 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

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


Click here to explore the full range of Benz Softwash cleaning chemicals & equipment

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