Although you may not want to do passive marketing, making sure your business is properly listed in all the Local Search Engine Directories would be really important. That way when people do "google" for a trash business, you will come up at the top of the listings because these directories rank high with the search engines. You can also issue Press Releases about your business and become an "expert" in your field, being the "go to" person for quotes when local media need them.
Another idea is to submit coupons to on-line coupon directories.
I have a great resource to help you do all this. Check it out at my website!
Claire
www.clairemoore.com
www.BlackBookForBusiness.com/LocalSEO/index.html