I have to take the puffer for a week according to my doctor – I didn’t like it at first – and daddy lost his temper on me – but he said he was very sorry after i cried my lungs out. But today – I was better at it and took it like a champ. I put it in my mouth – squeeze the puffer and then suck in my breathe and hold it for 10 seconds. The air chamber is also called spacer in Australia.