Mould may be growing in your home and you don’t even know it. That’s because mould loves dark, warm, humid places that are often out of sight. Once it begins to spread, getting rid of mould can be challenging. When the conditions are right, it can grow quickly — sometimes within 24 to 48 hours. Leaving mould untreated can lead to worsening respiratory illnesses as well as aggravating asthma and allergies. Three cleaning experts have spoken exclusively to Express.co.uk on effective ways to get rid of mould and how to stop it returning.