: Frequently stocks various sizes, including bulk packs of up to 9 pieces.

: Available at many neighborhood locations; you can use their store locator to check specific inventory near you.

: Designed specifically to melt grease clogs using heat and churning action.

Online platforms typically offer both individual containers and bulk packs:

: Do not use in drains with garbage disposals, as the chemical reaction can damage the unit. Drano 18-oz Drain Cleaner Crystals - Lowe's

: Typically carries the 18 oz crystals and offers in-store pickup options.