Never mix your cleaning solutions!

No matter how filthy your surface or how enthusiastic you’re feeling, never mix your cleaning products – some combinations can release chlorine gas and prove very dangerous.

Even ammonia on its own is pretty lethal – never, ever try smelling it – you will feel as if your head is about to come off.

Having said that, you’re fine with natural ingredients such as vinegar and bicarbonate of soda (indeed, mixed together make a great cleaner for bathroom tiles).