Okay, so I am not brilliant at cleaning it. I make sure the door and floor are clean but OMG, I have just craned my head inside and seen that the roof is covered in mini stalactites. In my defence, it is a range style so it's low level and the big flip down door makes it really hard to get at but wow. How do I get rid of them? There are elements on top so you can't get a good scrub on. Ideas please? Or do I have to call one of those men in a van?