Work together with an organization that works in this field. The police department in respect to the crime scene and the social services or similar when it comes to hoarding issues.
you have alternative channels: Direct Marketing, C2C marketplace. Website is not at all a bad idea because websites have certain objectives: a) they can be there for the purpose of providing Information (b) they can be a platform to undertake a transaction (c) they can be a platform to provide information and undertake transaction.
By going to events and associations.
Meetings. Get out and meet people.
Have a 30 second elevator pitch ready.
It's about reach, frequency and continuity. Or Awareness, Interest, Desire and Action.
You might want to look at Unique Selling Proposition by Rosser Reeves.
Legal departments, social service agencies and psychologists should each have a few trade magazines that you can send news releases to about the company. Find out who would write the article. Attempt to contact them via phone or in person. Then after a firm contact has been made, send them information about the company.
Determine your target market and ideal client profile. Find out where they get their buying information.
Then develop a unique and compelling message using the marketing equation of Interrupt, Engage, Educate and Offer.
Finally use the message to develop marketing materials and tactics to get the word out, i.e. elevator pitch, business card, website, direct mail, print ads, email, social media ad, postcards, etc. Go to networking events, industry specific trade shows and conferences and get your message in front of prospects.
Utilize Video Marketing. You do not need a website. See my profile if you need more detailed information.
John has a great answer. I've been in the cleaning business, for years, that's good advice. Also, you want to contact surround area cleaning supply companies and tell them what you do and leave business cards, flyers, etc.
You might join a franchise. Steri-Clean, for example, takes a direct and active marketing approach across the nation and will provide you direction and support in spreading the word about your franchise. From an in depth look at market opportunities in your area during training to materials to assist you in keeping your name in front of the right people. The marketing opportunities are vast and include:
Incredible web visibility and leads from multiple top organic ranking websites
(HoardingCleanup.com, CrimeCleaners.com, HOARDERS.com, Steri-Clean.com, HelpForHoarders.com)
Best Phone Number Possible for Hoarding Cleanup - 1-800-HOARDERS
Code Enforcement Officers
And many more which they claim to cover during training
I know nothing about the crime scene cleanup industry but my guess would be that networking would be the main way to go. Find events attended by people that need crime scene cleaning (law enforcement?). I'm guessing that's how most contracts for your business type are awarded.