Kan. Stat. § 61-3803
Before a lawsuit to evict a person pursuant to K.S.A. 61-3801 through 61-3808, and amendments thereto, is filed, the party desiring to file such lawsuit shall deliver to the other party a notice to leave the premises for which possession is sought. The notice shall be delivered at least three days before commencing the lawsuit, by leaving a written copy with the other party or by leaving a copy thereof with any person over the age of 12 years residing on the premises described in such notice, or if no such person is found upon the premises, by posting a copy of such notice in a conspicuous place thereon, or by mailing a copy of the notice to the other party at the address of the premises described in the notice. The three day notice period provided for in this section shall be computed as three consecutive 24-hour periods to commence at the time the notice is delivered, posted or mailed. If the notice is mailed, an additional two days from the date of mailing shall be allowed for the person to leave the premises before the lawsuit is filed. Intermediate Saturdays, Sundays, legal holidays, and days on which the office of the clerk of the court is not accessible shall be included in the computation of the notice period. The notice may be combined with any notice provided for in K.S.A. 58-2540 et seq., and amendments thereto.
K.S.A. 61-3803