Wyo. Stat. § 40--14--252 (2006)
§ 40--14--252 Buyer's right to cancel
(a) Except as provided in subsection (e) of this section, in addition to
any right otherwise to revoke an offer, the buyer
has the right to cancel a home solicitation sale until midnight of the
third business day after the day on which the buyer
signs an agreement or offer to purchase which complies with this part.
(b) Cancellation occurs when the buyer gives written notice of cancellation
to the seller at the address stated in the
agreement or offer to purchase.
(c) Notice of cancellation, if given by mail, is given when it is deposited
in a mailbox properly addressed and postage
(d) Notice of cancellation given by the buyer need not take a particular
form and is sufficient if it indicates by any
form of written expression the intention of the buyer not to be bound by
the home solicitation sale.
(e) The buyer may not cancel a home solicitation sale if the buyer requests
the seller to provide goods or services
without delay because of an emergency, and:
(i) The seller in good faith makes a substantial beginning of performance
of the contract before the buyer gives
notice of cancellation; and
(ii) In the case of goods, the goods cannot be returned to the seller in
substantially as good condition as when
received by the buyer.
(f) If a home solicitation sale is also subject to the provisions on
debtor's right to rescind certain transactions (W.S.
40--14--523), the buyer may proceed either under those provisions or under
this part.