I am not sure as to how exactly a saliva based drug test works, but I would assume that they would be able to tell regardless, as long as they got a sample. May I suggest NOT doing drugs while on probation? I mean, really, are the drugs that good that you would be willing to risk sitting in jail?
Geez.... Seriously??? You're obviously on probation for a good reason. If you fail the test, which you will if you've done any kind of drugs, you will be violating your probation! You will be extremely lucky if they don't revoke your probation and send your butt to jail! Have fun. You're screwed.
smoking is one of the easiest ways to pass a mouth swab drug test,its harder to trace the metabolites that drugs produce.Another method of passing a saliva drug test, if you are aware of such an oncoming test, is to refrain from consuming any such drugs for at least two to three days prior to the conduction of the test. Chewing cleansing tablets and using chemical mouthwashes to maintain oral hygiene is also a good way to mask the presence of drugs in your saliva.if you already have taken the test pray for another chance