What does an extra service visit cost and when is it worth adding?

An extra service visit for a standard portable toilet typically costs the same as your weekly service, but the price depends on your contract terms, the rental company's trip fee, and the distance to your site. The cost is driven by the service frequency, not the unit type, since the same vacuum truck and labor are used.

For 25 workers, OSHA 1926.51 requires only one portable toilet, so your setup meets the minimum. However, a single weekly service is often insufficient for a crew that size using the unit five days a week. By Friday, the holding tank is likely near capacity, and odor builds up as the deodorizer depletes. Adding a mid-week service keeps the tank from overfilling, maintains better odor control, and improves cleanliness. It's not a luxury, worker satisfaction and site hygiene matter, and a fresher unit reduces complaints. I've seen crews appreciate it, especially in warmer weather when odors worsen. Check if your rental company offers a discounted rate for additional services on the same contract.

An extra service visit costs more than Nina says because it's a separate truck trip with its own fuel, labor and dump fee. The service visit cost is fixed per trip for a standard unit on an existing route, so the price doesn't change with how full the holding tank is. For 25 workers five days a week, one standard unit on weekly service is at its limit. The tank fills faster than the deodorizer can work by day four. Adding a Wednesday service prevents overflows and keeps the odor down all week. It's worth it for crew morale and to avoid a mess that shuts the unit down early.