alastair keane's been to see the makers of dettol who are trying to assess whether they can make their products more sustainable or not. we use these kinds of products every day, from cleaning table tops to personal hygiene and health. these brands are made by one company called reckitt. and the industry to get them from factories to our homes is fast moving and comes with a big impact on the planet. not huge, but important that we look at that carbon footprint and think how are we going to reduce it, decarbonise it? the product carbon footprint that's everything from the raw materials all the way through to people using products has to come down by 50% by 2030. that's going to take a longer process. that's where we have to think not just about our factories, but the ingredients that we use, the packaging that we use. to work out how they can meet targets, the company is turning to a digital replica of everything they do through a programme called resilience. so this is the digital twin. this is resilience. this is resilience, a version of different companies. we map them as a digital