I tried val pak a couple years back running a maid/house cleaning service. Very bad ROI in this area. Sounds like it just depends on where you are and what and how you offer it. So far I've had the best luck with tossing postcards and a magnet in a plastic bag. Here's the secrete....Put your sign up at the entrance of that neighborhood a couple of days afterwards. You should get a least a call per day. I've been in one neighborhood for the last two weeks working. The sign really helped!! Oh and I probably only tossed to about 75 homes in that neighborhood. The cost was about $16 and the return has been close to $2500. Less than a penny on the dollar. Hope this helps!