I am thinking of getting one and wondered if they are any good, especially if they are heavy, and if you have to do it for a long time to actually kill any germs. Are you just moving germs around or does it actually kill them? I am in a rental place and would like to give it a blitz!

Are they easy/hygienic or not worth it?

this is the one I am thinking of particularly -

http://www.qvcuk.com/ukqic/qvcapp.aspx/app.detail/params.frames.y.tpl.uktsv.item.tsv/walk.html.|tsvmetadrill,html?cm_re=Promos-_-TSV-_-P:829663

Thanks Barbara, that is really useful and I totally agree with you about the fumes from cleaning products, they can be pretty strong!

I forgot to ask though, what happens to the steam, do you find everywhere dripping afterwards or do you wipe it all up as you go?