reporter: but what about cleaning? who are the pros that can give us the inside secrets? my mouth is shut. reporter: they weren t available. but good news. reader s digest has a piece out this month sharing secrets from professional house cleaners. here s what i learned. a wet pumice stone will clean the oven faster than any spray-on product. and if you overdo it on popcorn in the microwave oh, no. burned. pew. reporter: throw in a cup of water with some baking soda and nuke it till it boils. stuck-on gunk comes off easy and smells pretty clean. reporter: drop a denture tablet into your toilet and after 30 seconds a few swishes of the brush gets rid of that ring around your bowl. your bowl will smell strangely minty fresh. reporter: need to clean the mirrors? use coffee filters instead of paper towels. they re cheap, the right size,