Planning

How to Choose a Supplier

Eight questions that separate a supplier who will show up from one who will not, and why the cheapest quote is usually the one missing a service visit.

The Get A Shitter desk7 min readUpdated August 2026

The unit is a commodity. Every supplier in Central Texas runs roughly the same molded box from the same handful of manufacturers. What you are actually buying is whether a truck shows up on the day it was promised, in the condition it was promised.

These are the questions that surface that, and they take about four minutes to ask.

The eight questions

  • What is the total delivered price including pickup, for my exact dates and service schedule?
  • How many service visits are included, and what does a visit include beyond pumping?
  • What is the delivery window, and can you deliver the day before?
  • What happens if the driver cannot access the site — is the trip still billed?
  • How old is the unit I would be getting, and can you send a recent photo of it?
  • For trailers: what are the power and water requirements, and is a generator quoted?
  • What is the charge to relocate a unit after placement?
  • Can you provide a certificate of insurance, and what are your payment terms?

Question five is the one nobody asks and the one that best predicts satisfaction. Fleet condition varies enormously between suppliers and even within one supplier's inventory. A recent photo of the actual assigned unit is a completely reasonable request and the answer tells you a lot.

Why the cheapest quote is usually not comparable

In this category, an unusually low quote almost always resolves to one of three things: fewer service visits inside the term, delivery and pickup billed separately, or an older unit from the back of the yard.

None of those are dishonest. They are legitimate cheaper products. They are just not the same product as the quote you are comparing them against, and the only way to know is to ask the total-delivered question in the same words to every supplier.

What actually matters by job type

For construction, the thing to optimise for is service reliability and the ability to add units quickly when crew size jumps. Ask what their turnaround is on an add-on unit.

For weddings and upscale events, optimise for fleet condition and delivery discipline. A day-before delivery and a recent photo of the trailer are worth more than fifty dollars of price difference.

For rural and Hill Country placements, optimise for who already runs a route near you. The delivery and service premium on a remote placement frequently exceeds the unit rate, and a supplier whose truck already passes your county road prices completely differently from one making a dedicated trip.

For emergency response, optimise for breadth. Reach several suppliers at once, because they are all fielding the same surge and inventory is what disappears first.

Warning signs

  • A quote with no written service schedule
  • Unwillingness to put the delivery window in writing
  • An answer to a summer odor question that is a fragrance upgrade rather than a service visit
  • Suggesting sanitizer stands in place of handwashing where food is being served
  • Vague answers about where waste is taken — it has to go to a permitted facility
  • No certificate of insurance available for a commercial or venue booking
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Questions

Frequently asked

How do I compare porta potty rental quotes?

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Ask every supplier the same question: total delivered price, including pickup, for your exact dates and required service schedule. A per-unit rate is not comparable. Then confirm the number of service visits included, what a visit covers beyond pumping, and whether delivery is bundled or separate.

Why is one supplier so much cheaper?

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Usually one of three things: fewer service visits inside the term, delivery and pickup billed separately, or an older unit. All are legitimate cheaper products, they just are not the same product. Asking the total-delivered question in identical words to every supplier surfaces which it is.

Should I ask for a photo of the unit?

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Yes, and almost nobody does. Fleet condition varies enormously between suppliers and within a single supplier's inventory. Asking for a recent photo of the specific unit being assigned is reasonable, and how a supplier responds tells you a great deal.

How many suppliers should I get quotes from?

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Three or more, and more than that on rural and Hill Country placements where the spread is widest. The delivery and service premium on a remote placement often exceeds the unit rate, so the supplier who already runs a route near you can be dramatically cheaper than one making a dedicated trip.