Robot manufacturers love throwing “ROI in 18 months” on their websites. Buyers correctly distrust those numbers because they assume your facility looks like the manufacturer’s pitch deck. This post is the math we walk Illinois, Wisconsin, and Indiana warehouse customers through — with real consumables, real shift schedules, and the line items vendors usually skip.

The reference facility

To make the numbers concrete, let’s use a reference facility:

  • 80,000 sqft warehouse with mixed concrete, sealed-concrete, and a small showroom area
  • Two 8-hour shifts daily, plus one cleaning crew that comes in overnight
  • ~6 hours of cleaning per night (sweep + scrub) by a 2-person team
  • Labor rate $22/hr loaded (wage plus payroll tax, workers’ comp, basic benefits if applicable)
  • 22 working days per month

Status-quo: what the cleaning team currently costs

Two cleaners × 6 hours × 22 days × $22/hr = $5,808 per month, or about $69,700 annually for the cleaning function alone. Add in chemicals (~$200/mo), water/water-disposal fees (~$150/mo), wear-and-tear on a manual walk-behind scrubber (~$100/mo amortized), and you’re at ~$74,000 per year, all-in.

That number is what the robot has to compete with. Not against zero, against $74k/year.

Option A — PUDU CC1 (4-in-1 wet-process scrubber)

The CC1 sweeps, scrubs, vacuums, and mops in a single pass. 17,000 Pa suction, 1,000 sqm/hr coverage, auto-dock CSM for water exchange and battery charging.

For 80,000 sqft (~7,400 sqm), one CC1 needs roughly 7–8 hours per cleaning cycle. With overnight scheduling and the auto-dock cycle, that fits in a single overnight window without operator presence.

5-year cost of one CC1:

  • Robot capex (mid-range deployment): ~$40,000–$45,000
  • Annual service contract (parts, mapping changes, software updates): ~$2,200×5 = $11,000
  • Detergent and recovery: ~$1,800×5 = $9,000
  • Battery replacement (year 4): ~$1,800
  • Operator-hours for exception handling and bin emptying (~3 hrs/wk @ $22): ~$3,432×5 = $17,200
  • Total 5-year cost: ~$80,000–$84,000

5-year cost of the equivalent manual cleaning team: $74,000 × 5 = $370,000.

5-year savings: ~$285,000. The CC1 pays for itself in roughly month 7–9 if you fully redirect the cleaning team. Even if you keep one cleaner for spot-clean and detail work (saving roughly half), payback is still <18 months.

The CC1’s economic story is genuinely surprising the first time you see it. The robot is not the dominant cost. The labor it replaces is.

Option B — PUDU MT1 (dry sweeper)

The MT1 is sweep-only. No water, no detergent. 1,800 m²/h coverage with AI trash recognition, 35 L bin, IPX3. For warehouses where the floor doesn’t need wet cleaning — e.g., dry storage with no food or chemical exposure — this is the right pick. About half the consumable cost of the CC1, similar capex.

5-year cost of one MT1 (same warehouse):

  • Robot capex: ~$38,000–$42,000
  • Annual service contract: ~$2,000×5 = $10,000
  • Filters and brushes: ~$700×5 = $3,500
  • Battery replacement (year 4): ~$1,400
  • Operator-hours for exception handling: ~$3,432×5 = $17,200
  • Total 5-year cost: ~$70,000–$74,000

If your floor doesn’t need wet cleaning, the MT1 is the cheaper choice. If it does, the CC1 wins because two-pass cycles (sweep then mop) cost more in operator time than a single 4-in-1 pass.

What about MT1 Max for 24/7 facilities?

If you run three shifts and the cleaning window is unclear, the MT1 Max makes sense. IP54 protection, self-cleaning filter, 8-hour battery, 2,200 m²/h coverage, PUDU Link IoT integration with elevators and gates. Capex is higher (~$58,000), but it can run during operating hours alongside humans, eliminating the need for a fixed overnight cleaning window. For 24/7 logistics warehouses with no slack window, this is usually the right answer.

The numbers vendors skip

Three line items most ROI calculators leave out:

  1. Sick days and turnover. Cleaning crews in the Midwest run 30–40% annual turnover. The robot doesn’t call in sick. Your manager hours saved on rehiring and re-training are real and rarely modeled.
  2. Audit trail. Robot logs show every square meter cleaned and when. For ISO-audited or food-grade facilities, this turns a manual paper log into a queryable database. We’ve had two customers pass food safety audits faster because of this alone.
  3. Insurance and slip-and-fall. Consistent cleaning (vs “the floor got mopped sometime tonight”) reduces slip-and-fall risk. Some carriers will discount premiums when you can show robot cleaning logs. Worth asking.

How to validate this for your facility

Numbers in a blog post are starting points, not promises. The validation steps we walk customers through:

  1. Run our calculator with your real numbers: /roi-calculator. Adjust shifts, sqft, and labor rate — you’ll see a payback estimate update live.
  2. See the robot run at our Mundelein demo center. 15 minutes from the office. We’ll set it up to clean an area sized roughly like a section of your facility so you see realistic timing.
  3. Free walk-through assessment. We come on-site, measure, talk to your operations team, and give you a tailored ROI document. No commitment.
Want this number tailored for your facility?

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Related reading: Commercial cleaning robot ROI in Illinois · PUDU T600 review · CC1 product page · MT1 Max product page