"I ordered a case of oral swabs for my nephew who gets high a lot and I'm trying to make quit. The oral swab was cheaply made and didn't work at all after following the instructions and leaving it in his mouth for 10 minutes and making sure it was fully wet. I knew he had smoked marijuana a few hours before I swabbed his mouth because I smelled it on him and he later confessed, but the test was useless and didn't detect it at all. I called the company and after finding out the tests were made in China I asked for a refund. They refused to give me a refund and now I have a bunch of useless tests MADE IN CHINA lying around. Will never buy from this company again. "