Our new housecleaner wants to use those Swiffer dry dusting/cleaning cloths to dust. I've been doing a little research to determine if there's any toxicity to them, but all I've come across is happy consumer reviews...apparently they work great. I checked out the P&G website and there's even a MSDD sheet for them, but it says ingredients not disclosed because of proprietery forumula! They do have some coating I think which makes an electromagnetic surface which attracts dust. Any idea what they might be made of? If I can't get any info, I'll just tell her she'll have to use a regular cloth. TIA!