These purpose made chemical storage containers come in flat-pack form. Made in Turkey by the same company that builds Armatrac tractors, they’re galvanized and powder coated with integral gutters to make sure they’re properly weather-proof and water-tight.

Basic 2.0m x 2.0m versions with a chipboard floor start at £899 while a 2.0m x 3.0m bunded chemical store with galvanized grid flooring comes in at £1990.