What's the one thing you always check on a service visit?

I always check the holding tank level through the vent stack before connecting the hose. A full tank risks waste backup during pumping, which causes messy callbacks. On a standard unit, I also verify the deodorizer level and paper supply. For a deluxe flushing model, I test the flush mechanism and check the sink's water supply and drain. An ADA-compliant unit gets a quick look at the handrails and door latch to ensure they function properly. Restroom trailers require confirming power is on, lights work, and toilets flush before servicing. My routine starts with a visual tank check, then a pump-out, followed by interior cleaning and restocking. This order prevents overflows and missed issues. Weekly service is the norm, but hot weather, high-use events, or flushing units need more frequent visits to avoid odors and complaints. Good placement on level ground with clear truck access keeps service efficient.