Sirrahbeds thread about cleaning products reminded me what I thought of posting a while ago.

In Denmark we seem to have a lot of chalk in our water. I noticed that Fister's drinking fountain is covered in chalk every so often, and the electric water boiler too.

A good solution is to get a bottle of household winegar, pour it into the "thing" covered in chalk, let it sit there overnight - and then pour the winegar back in the bottle! The same winegar can be used several times.

Also .... isn't it irritating in winter when your glasses steam up? That happens when you go from the cold into a warm room. We have a spray you can get at Opticians' to use for cleaning your glasses to prevent it. But you can also use it on your bathroom mirror!