We all want to know "THE" formula to boost sales. There are so many formula options with combinations of Facebook pages, twitter, advertising, direct mail, brochures, event sponsorships, phone calls, promotional products, blogging, websites...and the list goes on.
If you just knew the right formula to invest your time and money then life would be good!
Here's the only formula that I know will work: consistency. Select 2 or 3 ways to market (or more if you can) and do them consistently over time. Quantity of your messages is just as important as the quality of your messages. Don't blow your entire marketing budget on one big campaign. Instead, do several smaller campaigns consistently over time.
If you use Facebook to market your business, use it consistently.
If you do direct mail mail outs to market your business, do it consistently.
If you advertise to increase your sales, do it consistently.
And don't forget, you must do a good job and/or produce a good product - consistently.