For many households, Roundup has long been an easy answer to the problem of weeds.

Patented by Monsanto four decades ago and now owned by Bayer, Roundup – known generically as glyphosate – is the most widely used herbicide on the planet.

Many Australians use Roundup at home, whether in targeted doses to kill weeds in garden beds without destroying wanted plants, or to spray liberally over driveways and side passages.

Michael Zagoridis is one of the managers at Pocket City Farms in Campberdown says using too much chemical herbicide and fertiliser is 'digging a hole for future generations'. Credit:Louise Kennerley

But with increasing publicity about potential health risks, people are starting to look for alternatives.