The short answer is, there are no guarantees in SEO. Just the confidence that you are using an experienced SEO consultant that has enough experience and knowledge that you can trust them.
We've built our business on succeeding (often where others haven't). We want every client to be thrilled with their experience. At the beginning of each project we work with our clients to establish clear, measurable, and aggressive target goals. Every effort is made to reach those targets.
Search Engine Optimization is not an exact science. It requires hours of multi variate testing to ensure we get the formula just right. Search engines are always tweaking their algorithms so it’s important to always work with a company that stays on top of the latest trends.