saliva tests have a much shorter detection time and are easier to fool, do a search for the company and drug test and often you can find the test type, also how to pass a saliva test. You don't have any friends or family that can provide you with a clean sample? you would be suprised how helpful family will be to help you get a job. you just a little bottle and a hand warmer away (2fl oz min can be found at cvs, etc)

oh and make sure to get an at home test and test their urine ( aunt jane may be cooler than she admits)