“No exposed flesh,” says Mayia Ogbebor, the syringe-disposal program manager for the San Francisco AIDS Foundation, which runs a 12-person, 12-hours-a-day, 7-days-a-week needle-pickup crew ...

Put the needle through the rubber top of the vial and push the plunger to inject the air. ... the syringe and needle size can make a big difference in managing their comfort and blood glucose levels.

Dr. Joe Whittington, who goes by Dr. Joe on TikTok, recommends getting a clean, unused medicine syringe, which doesn’t have a needle. First, cut the tip off the syringe to create a small opening.