How often should you use door hangers to get the best results for your service business?

It's always more effective to leave 4 door hangers on 250 homes than to leave 1000 door hangers once. We try doing "5 around" so the two houses next to our client and the 3 across the street. It also helps to have a different kind of door hanger each time hitting different pain points or highlighting a different offer, just because someone said no to you the first time doesn't mean they'll say no to something related to what you originally offered them.

based off my past results we like to do in burst of 500-1000 to really see results also depends kind of how many people you got going out and really what kinda result your trying to get from it and id say at least once a week if you want to notice results from it 

1.) Cloverleaf every new client after second visit

2.) Create "we were in your neighborhood and saw ________" hangers to show potential clients issues on their property you can help resolve. 

After every job do 5-10 arounds. We also spend any down time days putting out a few hundred and it always generates a few calls.