A frustrated homeowner is on a mission to stop a poopetrator in his tracks after her kerb became an unlikely dumping ground, with a mystery offender continuing to relieve himself in her front garden for some unknown reason.

CCTV footage has captured what looks like a tradie pulling over outside Patricia's Melbourne home before dropping his dacks and doing his business in the gutter outside her property. And according to the "gobsmacked" resident, it's not the only time the culprit has caused a stink.

The mystery man has allegedly offended many times in the exact same spot over the past three years, Patricia claims, leaving the fed-up homeowner to clean up his mess every time. Appearing on A Current Affair on Tuesday, the homeowner said she has "no idea who he is".