MORE than a third of dirty blighters wash their sheets just once every five weeks.

That's the shock result of a survey on bedroom hygiene.

By the time they finally swap their bed linen, it’s infested with 10 million bed bugs and dead skin cells. Not to mention the toothpaste, crumbs, fake tan and other debris.

Thirty four per cent of the 4,000 men and women polled for Silentnight beds admitted changing their sheets just 10 times a year. And one in 10 said it was just six times a year – that’s two months without clean bedding.

Yuck.

The received wisdom is that we should change sheets every week like the people of the North East who came out tops.

I do mine fortnightly - and might do them more often if I didn’t have to spend so much time solo wrestling to replace duvet covers.