Hi Lauren, I am from Controlled Contamination Services. Jeff has a great point. It’s not just the company but more importantly the employees performing the service. At CCS most of our job supervisors have been cleaning cGMP environments for 10 years plus, they have the experience and industry knowledge to lead a crew and get the job done right. They follow your SOP’s and procedures. Beware of a company that does not consider your SOP’s and procedures and just offers a low price, you will spend the savings tenfold following up on failures, excursions and meetings with QA and QC. Not to mention FDA audits and potential 483.