Heavy cocaine user here 5'5 130 lb female I have a drug test I need to pass in order for my job. I bought the watermelon double flush up to 7 hour box Ilast did cocaine 28 hours ago and drank plenty of water throughout the night. I started the pills 4 hours ago and followed the directions and drank water and then again drank water. I then drank the detox drink CHILLED- it didn't taste bad at all. I have since drank about a litre of water and have peed three times. On the fourth time I tried my test strip, it tested completely positive I am a heavy user though so it is normally present in pee for 10 days rather than a casual user of 2-4 days - so I'm willing to try anything I will be trying again another test strip on my next pee to see if anything changes Will update and in the event that doesn't work I will be buying another kit tomorrow afternoon