[Bill Douglas]

I have the windows open for most of the day so the house moisture levels match the outside levels. Which are good. And that's windows open in winter too. Our winters and summers are pretty moderate here so no big deal for me.

In winter I have a wood burner on or heat pump going. So dust mites and black mould don't stand a chance with the dryness.

Last night there was a thing on TV about the Germans swing the doors open in the middle of winter to get brand new air in their place and to lower the moisture levels. And Germany can be pretty cold in winter.