Can I return my package?

Unfortunately, due to the nature of the product we do not accept returns for unused products.  All our products have a long expiration period so keep it on hand for future use.  Just because you didn't end up testing for the current job that you are applying for, doesn't mean you won't need to be clean for a later job opportunity.  It's best to simply keep the product, or use it as directed, so that you are prepared for any future opportunities.