Equipment, chemicals and fogging techniques

Every Monday and Friday for the rest of December we will publish some of our favourite audio long reads of 2025, in case you missed them, with an introduction from the editorial team to explain why we’ve chosen it. From October: From murder scenes to whale blubber, Ben Giles has seen it – and cleaned it – all. In their stickiest hours, people rely on him to restore order By Tom Lamont. Read by Elis James. Help support our independent journalism at theguardian.com/longreadpod