A RCRA hazardous waste is a waste that either appears on one of three lists created by the U.S. Environmental Protection Agency, or, if not on the lists, exhibits one of four characteristics of hazardous waste.
How often should oxygen nasal cannulas be changed? Update: Our supplier recommended we change the cannulas monthly and the tubing every 60-90 days. My father has friends who's suppliers have had different guidelines.
How often should replace your kitchen sponge? You should replace it as often as you can. But as a limit, do not keep a sponge for more than a month. I do not see myself using a couple of sponges a week, so what I personalâ¦ly do is change my sponge every 15th and every 30th of every month.