A client points to syringe he would like to have for his exchange. A van parked in the Walgreen&#39;s parking lot provides clean needles in exchange for dirty ones twice a week in Paterson on Friday July 27, 2018. For every used syringe brought in, the harm reduction specialists with Hyacinth Foundation provides a new sterile syringe. The van is stocked with syringes of different sizes, alcohol wipes, constriction bands, cooking cups, water, strips to test for fentanyl, and other products to safely inject heroin.  