How to clean interior stonework

[Nicbob101]

Hi,

I've recently moved in to an older property with several exposed stone walls (unsealed) within the interior. The walls are in fairly good shape and don't need sandblasting - I'm really after some tips on how to keep them clean as they are quite dusty. I realise this is likely to be part of the deal wih stone walls but would welcome any tips on ways of giving them a gentle clean aside from hoovering?!

Thanks

[welsh brickie]

paint a pva solution on the wall

[Nicbob101]

Thanks for your reply - I've heard you have to let stonework 'breath' will the PVA solution seal completely or allow some 'breathing' if that does need to take place?