Enough treats to reach the moon - and more! Mars Petcare is celebrating 30 years of manufacturing at its Birstall site, near Leeds. The factory has been making pet food and treats, including Pedigree and Dreamies, since 1987. During that time, the Birstall site has produced 40,000 tonnes of its leading pet food and treats products. And the Yorkshire factory has produced an incredible four billion Pedigree Dentastix since the product was launched in 2002 – that’s enough to reach to the moon!