Where quality meets affordability

Sigma Wash delivers a delicate hand-wash experience to your doorstep and on your schedule.

How it works

Use the plan builder below to find the perfect subscription for you.

Shareable

You can use our services on any car in your household. Washes and cleanings reload each month.

Billed month to month

Your first month is prorated. Cancel anytime.

Add-Ons included

Just let us know if you would like your cargo area cleaned. No extra charge.

Perks

Members receive 10% off all extra services You get insider pricing as a member. If you run out of washes you get 20% off extra washes. Use one for yourself or buy your friend a wash.

Choose Your Services

Select one option from each category you want. You can choose a single service or create a predefined multi-service checkout.

1. Select

Pick one service plan from any section below.

2. Review

Your selected services and total price appear in the summary.

3. Checkout

The page finds the right Square link for your service or predefined combination.

Price Summary

Review your selected services, agree to the Terms & Conditions, then continue to checkout.

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Subscription Service Agreement

By checking the box below, you (“Customer”) confirm that you have read, understood, and agree to this Subscription Service Agreement with Quantitative Midwest doing business as Sigma Wash, a Kansas limited liability company (the “Company”).

You understand and agree that checking the box is your electronic signature and has the same legal effect as signing this Agreement by hand, to the fullest extent permitted by law.

  1. Parties and Agreement: This Subscription Service Agreement (the “Agreement”) is entered into by and between Quantitative Midwest doing business as Sigma Wash, a Kansas limited liability company (the “Company”), and the customer (“Customer”). This Agreement becomes effective on the date Customer checks the box, electronically signs, or otherwise accepts this Agreement.
  2. Subscription Enrollment and Automatic Renewal: Customer agrees to enroll in the subscription service identified in the Subscription Summary. The subscription automatically renews according to the Billing Frequency unless canceled under this Agreement.

    Customer authorizes Company and/or its payment processor to charge Customer’s selected payment method on a recurring basis for all subscription charges, fees, taxes, and other amounts due under this Agreement.
  3. Service Scope; Company Discretion: The services provided under the subscription are limited to the services, scope, frequency, availability, location, and conditions determined by Company. Company may modify, limit, substitute, discontinue, or refuse any service to the fullest extent permitted by law.

    Services are not guaranteed to be available at all times and may depend on scheduling, staffing, location, weather, equipment, customer demand, safety, business operations, third-party providers, or other conditions.
  4. Expiration of Unused Services: Any unused services, credits, sessions, visits, benefits, appointments, or service rights expire at the end of each monthly billing period and do not roll over unless Company expressly agrees in writing.

    For purposes of this Agreement, a monthly billing period means the recurring subscription period beginning on the charge date and ending immediately before the next recurring billing date, unless Company states a different billing cycle in writing.
  5. Price Changes and Plan Changes: Company may increase, decrease, modify, or otherwise change the subscription price, billing frequency, included services, or plan terms at any time, subject to any notice required by applicable law.

    If Company gives notice of a material price change, Customer’s continued use of the service after the updated price becomes effective constitutes acceptance of the updated price. Customer’s sole remedy if Customer does not accept a price change is to cancel the subscription before the updated price is charged.
  6. Cancellation by Customer: Customer may cancel the subscription using the Cancellation Method listed in the Subscription Summary. A cancellation request must include enough information for Company to identify the subscription account.

    Unless Company states otherwise in writing, cancellation becomes effective at the end of the then-current paid billing period. Cancellation does not automatically entitle Customer to a refund for amounts already paid.
  7. No Refunds; Failed Payments; Chargebacks: Payments are non-refundable except where required by applicable law or expressly approved in writing by Company.

    Company may suspend, limit, or cancel services if payment fails, is disputed, is reversed, is charged back, or is not received. Customer agrees to contact Company first regarding any billing concern, duplicate charge, cancellation issue, or service dispute. Customer remains responsible for all valid charges and amounts owed under this Agreement.
  8. Personal Use; No Resale; Sharing Responsibility: The subscription is personal to the individual Customer who accepts this Agreement. Customer may not transfer, assign, sell, sublicense, resell, repackage, broker, market, or commercially exploit any services provided under the subscription.

    The service is intended only for the Customer accepting this Agreement. If Customer shares, gifts, donates, transfers, permits access to, or allows another person to use any portion of the service, Customer assumes full responsibility and liability to the fullest extent permitted by law for that person’s use, including payment obligations, conduct, damages, misuse, claims, losses, injuries, disputes, and consequences arising from that use.
  9. Customer Responsibilities: Customer agrees to provide accurate information, keep payment and contact information current, comply with Company rules and policies, use the service appropriately, pay all amounts due, cooperate with scheduling and access requirements, and avoid misuse, unauthorized sharing, or unauthorized resale of the service.

    Customer is responsible for the conduct of any person Customer allows to access or receive the service.
  10. Company Right to Suspend, Refuse, or Terminate Service: Company may cancel, suspend, refuse, limit, or terminate Customer’s subscription or any services at any time, for any reason, including nonpayment, safety concerns, misuse, inappropriate conduct, operational limitations, scheduling limitations, violation of this Agreement, or any other business reason, to the fullest extent permitted by law.

    If Company terminates the subscription without cause before the end of a paid billing period, Company may provide a prorated refund, credit, substitute service, or no refund, except where otherwise required by applicable law.
  11. Prior Terms, Service Rules, and Policies: This Agreement does not replace, negate, waive, override, amend, or alter any prior Terms of Service, website terms, service policies, waivers, disclaimers, rules, or other agreements that Customer has previously accepted or may accept when receiving the service. All such terms remain fully valid and enforceable to the extent permitted by law.

    If there is a direct conflict between this Agreement and another written Company policy, Company may determine which provision controls unless applicable law requires otherwise.
  12. Communications and Notices: Customer agrees that Company may contact Customer by phone, email, text message, or other reasonable method regarding the subscription, appointments, scheduling, billing, account updates, cancellation, and service-related matters. Customer is responsible for maintaining current contact information.

    Notices sent to the contact information provided by Customer will be considered received by Customer unless prohibited by applicable law.
  13. Disclaimer; Limitation of Liability: To the fullest extent permitted by law, Company disclaims all warranties not expressly stated in this Agreement, including implied warranties of merchantability, fitness for a particular purpose, and uninterrupted availability.

    To the fullest extent permitted by law, Company’s total liability arising out of or relating to this Agreement or the services will not exceed the amount Customer paid to Company for the subscription during the one-month period immediately preceding the event giving rise to the claim. Company will not be liable for indirect, incidental, consequential, special, punitive, or lost-profit damages.
  14. Indemnification: Customer agrees to defend, indemnify, and hold harmless Company, its owners, employees, contractors, agents, representatives, successors, and assigns from any claims, losses, damages, liabilities, costs, and expenses, including reasonable attorney fees, arising out of or related to Customer’s use or misuse of the services, violation of this Agreement, unauthorized sharing, gifting, transfer, resale, or the conduct of any person Customer allows to access or receive the service, to the fullest extent permitted by law.
  15. Reviews and Public Statements: Nothing in this Agreement prohibits Customer from making an honest review or truthful statement about Customer’s experience as permitted by applicable law. Customer may not make statements that are knowingly false, misleading, defamatory, harassing, or that improperly disclose private, confidential, or legally protected information.
  16. Electronic Signature; Copy of Agreement: Customer agrees that this Agreement may be presented, reviewed, accepted, signed, and stored electronically. Customer agrees that Customer’s electronic signature, typed name, touchscreen signature, checkbox acceptance, or other electronic indication of agreement has the same effect as a handwritten signature to the fullest extent permitted by law.

    Customer acknowledges that Customer had the opportunity to read this Agreement before accepting it and may request a paper or electronic copy of this Agreement.
  17. Governing Law; Venue; General Terms: This Agreement is governed by the laws of the State of Kansas, without regard to conflict-of-law rules. Any dispute arising from or relating to this Agreement shall be brought in the state or federal courts located in Kansas, unless another venue is required by applicable law.

    If any provision of this Agreement is found unenforceable, the remaining provisions will remain in effect. This Agreement, together with any applicable Company terms, service rules, waivers, policies, and accepted service terms, represents the agreement between the parties regarding the subscription. Company’s failure to enforce a provision is not a waiver. Customer may not assign this Agreement without Company’s written consent. Company may assign this Agreement as part of a sale, transfer, reorganization, or business transaction. Headings are for convenience only.
  18. Minimum Customer Acknowledgment: Customer confirms that Customer has read this Agreement, understands this is a recurring subscription, authorizes recurring charges, understands unused services expire at the end of each monthly billing period, understands cancellation does not automatically create a refund, understands prices and services may change, and agrees not to resell or commercially exploit the services.
  19. Signatures: By checking the box below, Customer accepts and agrees to this Subscription Service Agreement and authorizes Quantitative Midwest doing business as Sigma Wash to provide and bill for the subscription service according to the terms stated above.

    No Company Signature Required: Customer acknowledges that this Agreement becomes effective when Customer checks the box, electronically signs, accepts this Agreement, and Quantitative Midwest doing business as Sigma Wash accepts Customer’s subscription, processes Customer’s payment, schedules services, provides services, or otherwise begins performance. A separate signature by Quantitative Midwest doing business as Sigma Wash is not required for this Agreement to be valid or enforceable.


    I have read, understood, and agree to the Subscription Service Agreement. I understand that checking this box is my electronic signature and has the same legal effect as signing this Agreement by hand.


    By providing your phone number, you agree to receive text messages from Quantitative Midwest doing business as Sigma Wash related to your inquiry, appointments, services, orders, customer support, and promotional offers. Message and data rates may apply. Message frequency may vary. Reply STOP to unsubscribe or HELP for assistance. Consent is not a condition of purchase. Mobile opt-in data will not be shared with third parties for marketing or promotional purposes. See our Privacy Policy for details.