Once you have the data, how do you use it? There is a feature on cleaner planner to store this information, does the system you use have something similar?
Have you stopped an advertising method due to the results of the question?
I've always used flyers, I know the hit rate I get because we usually flyer one area at a time and when the call comes in I don't need to ask. The Internet is always going to be secondary to that for me. I get calls from people who've 'found' me on the Internet but they are just the same as any other customer (albeit usually outwith my current target area).
We use Aworka and it allows us to keep track of where customers come from. A bit of jiggery-pokery with the numbers and I get the money spent per new customer number which we try to keep as low as possible. It allows a comparison between (for example) leaflets out with a magazine and solus delivery so we can make sensible choices.
We were flyers only for a long time with a website because we felt we needed one. Turns out the web is more effective in terms of price per new customer but not good enough at generating the numbers we need (a full-to-the-brim franchisee every year).
To answer the specific question, we haven't actually dropped any method of marketing but we've certainly changed the mix.
Vin