Hello Matt,
Hope all is well, I recently started working on my family's cleaning business and in many ways sounds similar to your industry/business. If new clients are not an issue, I would say focus on the relationships that you build with your clients and the quality of your work. We have raised our rates over the years and some clients might cancel services, however most of them continue services. These are clients that have been with us for up to 20 years and see my parents are friends. Many will express their thoughts on rates going up and not being happy however they do express that the quality of our work, reliability and long-time friendship is worth it.
We don't advertise, aside from our company cars, yet we get new clients almost daily. The business has grown to almost 70 employees at its peak and over 300 clients. This has allowed the business to invest in new software, new management and focus on its company goals.