The Core System — Detergent + Booster, One Box.
Our flagship Workwear Detergent paired with Grease & Odor Booster: everyday loads and heavy-soil days covered in one purchase.
You're on the list — we'll email you when it's back.
No payment. We'll email you the moment the next batch is back in stock.
Between production runs — the next batch ships in about 4–6 weeks. Reserve your spot for $1 to ship first (guaranteed a unit), or join the waitlist free and we'll email you the day it's back.
- HE-compatible, works in any washer
- No bleach, optical brighteners, or floral perfumes
- Safe on FR, high-vis, and heavy workwear
About this product
Between production runs — currently sold out
Two ways onto the next batch (ships in about 4–6 weeks):
Free — add your email to the ship-date signup on this page and we'll email you the day it's back.
$1 to lock your spot — reserve this product → Ship first, guaranteed a unit, plus 15% off your first order — more than your $1 back, fully refundable.
The core system in one box.
Heavy-Duty Laundry Kit pairs our flagship Workwear Detergent with Grease & Odor Booster — two formulas designed to work together. Detergent for everyday loads. Booster when conditions go from rough to brutal.
What's Inside
- 1 × Heavy-Duty Workwear Detergent (32 oz) — ~64 loads
- 1 × Grease & Odor Booster (16 oz) — ~16 boosted loads
Why Buy The Kit
- Save vs. buying separately
- Formulated as a system, not bundled after the fact
- Covers everyday wash + heavy-soil days in one purchase
Best For
First-time Blackwater customers, gift purchases for trade workers, anyone who alternates between standard and heavy-soil days.
Formulated without bleach, fabric softeners, or optical brighteners — safe to use on FR and hi-vis. Does not restore or confer flame resistance. Follow garment and employer care instructions.
Why tradesmen trust Blackwater
FR-Safe Formula
No bleach, softeners, or optical brighteners.
Next Batch
Between production runs. Reserve for $1 to ship first with a guaranteed unit, or join the free waitlist.
Learn moreBlackwater vs. The Aisle.
Most heavy-duty detergent is the same suburban formula in a darker bottle. We didn't do that.
Everything Inside The Bottle.
All the technical answers.
Shipping & Restock
We're between production runs. The next batch ships in about 4–6 weeks. Reserve your spot for $1 to ship first with a guaranteed unit, or join the waitlist free and we'll email you the day it's back.
Once we're shipping day-to-day: free US standard shipping over $70, $8 under, $15 express. Full details in our Shipping Policy.
Formula & Ingredients
Petroleum-cutting surfactants, plant-derived enzymes for set-in protein soils (sweat, skin oil), pH-balanced builders to lift mineral grit (concrete dust, hydraulic fluid). No dyes, no synthetic florals, no fabric softeners.
FR & High-Vis Safety
Safe on FR-rated cotton, Nomex, FR-treated knits, Carhartt duck canvas, and high-vis reflective tape. No chlorine bleach, no optical brighteners, no silicone-based softeners.
No detergent restores or confers flame resistance. Blackwater is formulated not to damage the FR treatment already in your garment. Follow your garment and employer care instructions.
How To Use
Heavy soil: 1 capful per load (HE compatible, all washer types).
Pre-treat: For set-in stains, apply a small amount direct to the stain and wait 5 minutes before washing.
Cold water OK: Works in cold, warm, or hot — runs best with full surfactant action at warm.
Care & Storage
Store below 90°F out of direct sunlight. Shelf-stable for 24 months from manufacture date. Recyclable HDPE bottle (#2).
Returns & Guarantee
30-day money-back guarantee. Open it, use it, and if it does not work on your gear we refund you — you do not need to send back a used bottle. Full terms in our Refund Policy.
Pause, skip, or cancel any subscription anytime from your account.
Common Questions.
When will my order ship?
We're between production runs — the next batch ships in about 4–6 weeks. Join the free waitlist to be emailed the day it's back, or reserve your spot for $1 to ship first with a guaranteed unit.
How is it different from Tide or Persil?
Mainstream detergents are tuned for everyday household soil. Blackwater is formulated specifically for petroleum oils, concrete dust, smoke, sweat-set odors, and embedded grease.
Is it safe on FR and high-vis gear?
Yes. No chlorine bleach, no fabric softeners, no optical brighteners — the three things that compromise FR ratings and degrade reflective tape. No detergent restores or confers flame resistance; this one is formulated not to damage the treatment already in your garment.
How much does it cost per wash?
About 44¢ per job-site-grade load, or roughly 40¢ on Subscribe & Save.
Can I subscribe and save?
Yes — 10% off every order, delivered every 1, 2, or 3 months. Pause, skip, or cancel anytime from your account. Your first subscription order ships as soon as the next batch is in.
What if it doesn't work on my gear?
30-day money-back guarantee. Open it, use it, and if it doesn't do the job we refund you — no need to ship back a used bottle.
Built For People Who Actually Work For A Living.
One system for diesel, grease, and set-in sweat — free of the three things that wreck FR gear.