The present invention relates to uses of rat and cat urinary proteins and compositions thereof as rodent control agents, particularly mouse repellents. The proteins used are rat rMUP-13 and cat Cfeld4, or sequences with 75% identity thereto. Also described are peptide fragments of the proteins for use as repellents. The proteins or peptides may be applied alone, or as part of a composition, potentially in aqueous form, as a spray, or both. Also described is a method of repelling mice comprising applying the peptides or compositions to an area.