Why do porta potties smell worse in summer?
Porta potties smell worse in summer because heat speeds the bacteria that break down waste, and a plastic shell in full sun can run 20 or more degrees hotter than the air. In Turlock, July and August highs often pass 100°F, so a unit that is fine in April can turn sour by Thursday.
The blue deodorizer in the tank slows bacteria, but it weakens as the tank fills and warms. That is why service frequency matters more in summer than any other month.
Where should a porta potty go on a hot day?
A porta potty on a hot day should go in afternoon shade, with the door facing north or east, and at least 50 feet downwind of where people eat or rest. Shade from a building, tree line or shade sail keeps the shell cooler and the tank more stable.
- Keep units off dark asphalt when packed dirt or gravel is nearby.
- Leave space around the vent stack so air can move.
- Do not wrap units in tarps; that traps heat.
How often should a unit be serviced in summer?
A unit used by up to 10 people should be serviced once a week in summer, and a unit shared by 11 to 20 people should be serviced twice a week. For events over 95°F, plan one more unit than the chart shows, because guests drink more water and visit more often.
Ask for twice-weekly service on job sites from June through September. See the servicing schedule guide for what each visit includes.
What else helps crews and guests in the heat?
A hand-washing station with cool water helps crews and guests in the heat, and so does placing units near the water and shade stations that Cal/OSHA's heat illness rule already requires on outdoor job sites. For weddings, a restroom trailer with air conditioning keeps formal guests comfortable.
Cal/OSHA's outdoor heat rule is Title 8 §3395. Read it at dir.ca.gov.