Kit No. 01 Discovery Kit No. 02 The System Kit No. 03 Year Kit Kit No. 04 Scent Flight
THEORY. The Discovery Kit — Multi-Surface
No. 01Multi-Surface
THEORY. The Discovery Kit — Glass
No. 02Glass
THEORY. The Discovery Kit — Bathroom
No. 03Bathroom
THEORY. The Discovery Kit — Kitchen
No. 04Kitchen
Composed from individual product renders · Kit photography in progress
Kit No. 01 · Starter

The Discovery Kit

The whole lineup. One scent. The shortest path from the cleaning aisle to a home that smells like a place you'd want to be.

★★★★★ 4.9 · Early-access reviews
4
Cleaners covered
1
Scent across the home
$22
Per bottle on sub
Scent — Cedar + Bourbon
Purchase
Subscribe & Save −26%
Refills delivered every 60 days · Cancel anytime
$89.00
$109.00
One-time purchase
Four 16 fl oz spray bottles · Single scent
$109.00
Save $10.80 vs buying singles. Refills another 20% off.

Free shipping on the kit  ·  30-day no-questions returns

Plant-
Based
Made in
U.S.A.
Cruelty-
Free
Refillable
Bottles

Try the whole theory.

Four cleaners, one purchase. Skip the trial-and-error and meet the entire lineup at once.

One scent, one home.

Pick a scent. Cedar + Bourbon, Oak Moss + Vetiver, or Bay Rum + Clove. The whole kit ships in it.

Refills on autopilot.

Subscribe and your refills auto-replenish every 60 days at 20% off. Pause or cancel from your account.

Five fewer trips.

Replaces the random collection of half-empty bottles under your sink with one unified system.

What's in the box

Four bottles. One scent. The whole house, covered.

Every bottle, every cleaner, every ounce. Listed in full.

No. 01

Multi-Surface Cleaner

Counters, painted walls, finished wood, glass. 16 oz.
No. 02

Glass Cleaner

Mirrors, windows, shower doors. Ammonia-free. 16 oz.
No. 03

Bathroom Cleaner

Soap scum, hard water, tile, porcelain. 16 oz.
No. 04

Kitchen Cleaner

Grease, food residue, stovetops, range hoods. 16 oz.
The Scent — Cedar + Bourbon

Aged oak. Warm spice. A room worth remembering.

A cleaning product isn't supposed to smell like this. That's the point.

Top Notes
Black pepper, citrus peel, dry birch
Heart
Aged cedar, bourbon vanilla, oak
Base
Smoked tonka, leather, dry amber
Reviews

What people are saying.

Early-access kit owners on what the system actually feels like.

★★★★★

The fastest way to commit.

I wanted to try Theory but didn't want to drop $30 four separate times to find out which products I'd actually use. The kit made that decision easy. Six weeks in, I've replaced every cleaner under the sink.

Henry T. · Brooklyn, NY ✓ Verified
★★★★★

Best housewarming gift I've given.

Got this for my brother's first apartment. Single scent throughout the house is genius — Cedar + Bourbon hits different when it's on the kitchen counter AND the bathroom mirror. He texted me a thank-you a week later.

Megan R. · Austin, TX ✓ Verified
★★★★★

$89 on sub is the right price.

$30 a cleaner sounded steep until I worked out what subscribing did. The Discovery Kit on subscription is $89 — call it $22 a bottle for the whole lineup, then concentrates ship every 60 days at 20% off. Math worked. Bottles are gorgeous. House smells like a hotel bar.

Jordan V. · Chicago, IL ✓ Verified

Reviews shown are pre-launch testimonials from early-access kit owners. Full review corpus available on request.

Or pick singles

Not ready for the whole kit?

The four singles are still here. Buy one, see how it lives in the house.

No. 01
Multi-Surface
The everywhere bottle.
View →
No. 02
Glass
Streak-free. Ammonia-free.
View →
No. 03
Bathroom
Soap scum, hard water, gone.
View →
No. 04
Kitchen
Cuts grease. Smells like Vermont.
View →
Questions

Frequently asked.

If we missed yours, just ask.

Not in this kit — the Discovery Kit is intentionally one scent across all four bottles. That's the whole brand experience: a single scent profile across the home. If you want to mix scents, buy the singles or look at the Scent Flight kit (No. 04).
Subscribe and we'll send the kit once. After that, you receive 16 oz Refill Concentrate refills (one for each cleaner) every 60 days at 20% off. Each concentrate makes 10 spray bottles, so a single refill cycle covers months of cleaning. Pause, change scent, or cancel anytime from your account.
30-day no-questions returns. If the scent isn't for you, we'll refund the kit and you keep the bottles. We'd rather build a customer than win an argument.
The Discovery Kit is four ready-to-use spray bottles — enough to live with for 8-10 weeks before you need refills. The Year Kit (No. 03) adds four 16 oz Refill Concentrates on top, covering you for roughly a year out of one box.
Yes. Add a gift note at checkout and we'll ship in our standard kit packaging with the gift note enclosed. We don't put pricing in the box.
Standard kits ship within 2 business days. Free shipping on the entire kit. 30-day no-questions returns.
T.
The Discovery Kit — Cedar + Bourbon
$89.00 · Subscribe & Save