As warmer days approach, swimming pools across the country become popular spots for cooling off.

Sometimes there’s nothing better than splashing around in the water with your family and grandkids.

Although chlorine and automatic pool cleaners do a great job maintaining the water’s clarity and cleanliness, the increased number of swimmers can sometimes degrade the water quality, leaving it looking murky.

Nobody wants to invite their friends around for a dip only to find it covered in a thick layer of grease!

Given that Australia is the skin cancer capital of the world, most people lather themselves in a thick layer of sun cream before they enter the water.

While this is great at protecting our skin, it can lead to your pool water looking murkier than it should.

The lotion and other oils from your skin can easily rub off and linger at the top of your pool.

Thankfully there’s a handy hack that will keep your pool looking crystal clear.

Next time you go for a dip, throw a couple of tennis balls in the water. They will float to the top and will actually help clean your pool.

While it sounds a bit silly, the material on the balls will absorb a lot of the oils that rub off from your skin. Acting like a magnet of sorts, Instructables.com suggests that the unsightly grease will draw itself to the tennis balls, rather than spreading across the top layer of your pool.

If you’ve got grandchildren over, they’ll think that the balls are simply there for them to play with and you won’t even have to tell them about this handy hack!