how spacer are used
Spacers should be used by: 1  all children â kids aged under 4â5 years will need a mask attached. 2  all adults taking a corticosteroid preventer medication (e.g. Flixotide, Symbicort) using an MDI/puffer. 3  adults who have trouble coordinating the âpress and breatheâ technique when using an MDI/puffer.