Six-month garage build: what happens if we skip a service visit?

If the unit is already ripe by the end of the week, skipping a service means the holding tank gets too full to use well before the second week is over. Nothing mechanical breaks on a standard unit. It just fills up, and once the level gets close to the seat the crew stops using it and starts finding other options, which is usually what the neighbors end up noticing.

Here's what I've seen on our jobs when a visit gets missed.

The deodorizer charge is spent after the first week, so the smell gets a lot stronger and carries further on warm afternoons.

Paper and sanitizer run out, since restocking happens on the service visit too.

The next pump-out is a bigger job and the cabin needs a real clean instead of a quick wipe down.

There's also the compliance side. OSHA expects job site toilets to be kept in sanitary condition, and a unit that's overflowing isn't going to pass that if anyone looks.

With three to five guys five days a week, weekly is already the lowest I'd run it. If the budget is tight, call the rental company and ask what they can do on the schedule before you cancel a visit outright. Skipping one usually costs you more in cleanup and crew complaints than it saves.