About This Deal

LISTERINE ULTRACLEAN MOUTHWASH (2X1.5L) is a Costco Canada item, tracked by YepSavings under ITM #628368. We monitor its in-store price across multiple Costco Canada warehouses.

This item is currently on sale at CA$11.99, down from CA$15.99 — an instant savings of CA$4.00 (25% off). The deal runs through 2026-05-17.

The product photo on this page was captured in-store at a Costco Canada warehouse by YepSavings and shows LISTERINE ULTRACLEAN MOUTHWASH as displayed on the warehouse shelf.

This item has been added to YepSavings shopping lists 756 times, an indicator of ongoing Costco member interest in LISTERINE ULTRACLEAN MOUTHWASH.

YepSavings tracks Costco Canada in-store price observations across locations; values shown reflect what shoppers reported at specific warehouses on specific dates. Costco Canada members should confirm the current in-warehouse price before purchase, as availability and pricing vary by warehouse and week.