I just opened a fresh ounce of some Blue Dream auto I placed in Grove bags in early March.
It was dried, placed in a Grove with a mini hydrometer sealed and heat sealed.
I opened it this week. It had a remarkable nose. Smelled like fresh cannabis. Humidity inside the bag was 59%.
I pulled a couple of sample buds and placed them under my 40x microscope. Trichomes were lovely, intact and glistening.
It smoked beautifully, the smell of fine marijuana lifted through the house.
You also need to be careful when you reuse them. If you dump the last of the contents out…some of the small plant material can get stuck in the zip lock…it will still close but will be leaking. Quick visual inspection before you reuse can prevent this.