770 ILCS 50/4
If the chattel or chattels are not redeemed within 30 days after the publication of the notice required by Section 3 of this Act, the lienor may sell such articles at a commercially reasonable public or private sale conducted so as to maximize the net proceeds of said sale on the day and at the place specified in such notice. The proceeds of the sale in excess of the charges for the expenditure of such labor, services, skill, or material or furnishing of storage, and the necessary expenses of the procedure required by this Act, shall be held by the lienor for a period of 6 months, and if not reclaimed by the owner thereof within that time shall be deposited with the county treasurer of the county in which such labor, services, skill or materials were expended or such storage was furnished. The said treasurer shall credit such excess to the general revenue fund of the county, subject to the right of the owner or his representatives to reclaim the same at any time within 3 years of the date of such deposit with the treasurer.
770 ILCS 50/4