Asthma

I wonder what other measures should I take to minimise dustmites in my home. I have a normal vacuum cleaner at home. I'm not sure whether dustmites will be sucked in. Anyway, I read this. It catches my attention since my wife has asthma. "If you have asthma, high concentrations of dust mite residue can trigger frequent and severe asthma signs and symptoms such as lung congestion, wheezing and shortness of breath. You may be especially prone to asthma attacks at night, when you're lounging on a mite-infested sofa or sleeping in a mite-infested bed".

And here's a picture of dustmite.