If you've noticed your mattress smelling slightly musty lately, an expert has said that spring temperatures can bring sweat and odours to the surface. It's important to clean it every few months, and there's no better time than making it part of your spring clean.

Martin Seeley, CEO of MattressNextDay, said: "Every night, your mattress absorbs small amounts of sweat and humidity from the air. In winter, that moisture is more likely to stay trapped because homes are less ventilated and beds stay covered for longer. Over time, it can gradually build up inside the mattress." This makes spring a great time to refresh mattresses and help them stay odour-free.

The expert recommended putting baking soda onto the mattress to help "absorb odours" which get trapped in the fabric.

To do so, simply sprinkle it over the mattress and leave it for 30 to 60 minutes to work its magic. Then, remove it with a vacuum using an upholstery attachment.

This can be done every few months to keep your bed fresh, clean and odour-free.

Baking soda can be picked up for as little as 89p and used for a number of jobs around the home.

Additionally, there are many ways to keep your mattress fresh. This includes letting it breathe every morning.

The expert said: "One of the simplest things I recommend is letting your mattress breathe every morning.

"If you make the bed straight away, you trap heat and moisture inside the mattress. However, leaving the duvet pulled back while you get ready gives the mattress time to dry out."

When you change your bedding, which should be once a week in the summer months, move your mattress near a window or outdoors if possible.

Martin explained: "If you can move the mattress near a window while changing bedding, I always recommend doing so. Natural daylight and fresh air help dry out moisture that has built up in the mattress fibres.

"Sunlight also creates a drier environment on the mattress surface, which makes it harder for odour-causing bacteria and dust mites to thrive."

Even leaving it in daylight for a short time while you change the sheets can help to freshen it up.

It's also important to rotate your mattress every three months to spread its wear more evenly.

According to the expert, memory foam and hybrid mattresses should usually be rotated rather than flipped, while some traditional spring mattresses can be flipped if the manufacturer recommends it.