770 ILCS 90/3
All persons other than common carriers having a lien on personal property, by virtue of the Innkeepers Lien Act or for more than $2,000 by virtue of the Labor and Storage Lien Act may enforce the lien by a sale of the property, on giving to the owner thereof, if he and his residence be known to the person having such lien, 30 days' notice by certified mail, in writing of the time and place of such sale, and if the owner or his place of residence be unknown to the person having such lien, then upon his filing his affidavit to that effect with the clerk of the circuit court in the county where such property is situated; notice of the sale may be given by publishing the same once in each week for 3 successive weeks in some newspaper of general circulation published in the county, and out of the proceeds of the sale all costs and charges for advertising and making the same, and the amount of the lien shall be paid, and the surplus, if any, shall be paid to the owner of the property or, if not claimed by said owner, such surplus, if any, shall be disposed under the Revised Uniform Unclaimed Property Act. All sales pursuant to this Section must be public and conducted in a commercially reasonable manner so as to maximize the net proceeds of the sale. Conformity to the requirements of this Act shall be a perpetual bar to any action against such lienor by any person for the recovery of such chattels or the value thereof or any damages growing out of the failure of such person to receive such chattels.
770 ILCS 90/3