Nurses on an inclient care unit are working to help reduce unit costs. Which of the following actions is appropriate to include in the cost- containment plan?

Use clean gloves rather than sterile gloves for colostomy care.

Store opened bottles of normal saline in a refrigerator for up to 48 hr.

Return unused supplies from the bedside to the unit's supply stock.

wait to dispose of sharps containers until they are completely full.