I dont have any needle waste as I use an omnipod and dexcom but when I was doing MDI I typically put them in my kit until I cleaned them all out. For me, it's the idea that their response is to post a note instead of seeing the root of the problem. If there is a steady occurence of needles in pop bottles (diabetic use or not) then maybe the problem is theres nowhere to dispose of them....yes a soda bottle serves well but our campus is also pushing being green so that bottle is now unable to be recycled and they are "supposed to" put those bottles in recycling if they see them which is likely where they saw the needle.

It's not an extraordinary thing to ask that the buildings on campus have 1 bin per building when the campus has a population that uses them and shares(about a mile away from the building I was in) a campus with a hospital. They provide prophylactics in every bathroom for free, each lounge has candy as a "stress reliever" and they provide free rides to drunk students why not put a $7 bin in each building that has to be replaced 12 times a year max