When the SEO agency have difficulties ranking themselves, they will seriously have problems ranking you !
Therefore, to guarantee you choose the ideal pros for your industry, do the researching using the search engine. Type SEO Company or Agency + your town.
Look at the top ranking seo agency such as Portland SEO Expert | Search Engine Optimization.
They are the experts and consultants you like to seek out. Gather trials if you are uncertain on just how they do search engine optimisation.