XANAX (alprazolam) HAS a duration of action of up to 6 hours. If you want to know how long after you take it can it be DETECTED, that's different. Most benzodiazapines, when taken on a regular basis, can be detected in the urine from 24 hours to 72 hours.
The color of that mulch is a dark brown, browner than most brown mulches. I thought it was good mulch until I noticed how large the pieces were. They were similar to large chunks of wood more so than mulch.
Wood chips come from the interior of a tree. This mulch is available as hardwood or softwood, or as a mixture. Hardwood mulches, according to Fine Gardening, will last a little longer than softwood mulches. Wood chips, in general, do not last as long in the landscape as bark mulches.