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.
Dyed Mulches. Shredded bark and wood-nugget mulches come in dyed in tones of red, gold, brown and black. Colors will fade completely over several years from exposure to sun and water, and some color change will be noticeable within the first year.