Zep bleach formula penetrates, whitens, and removes mildew stains. Safe for use on ceramic tile, fiberglass, acrylic, and grout. Ready-to-use formula reduces scrubbing. No. ZUMILDEW32: Size: 32 Oz., Type: Trigger Spray, Pkg Qty: 1, Package Type: Bottle No. ZUMILDEW128: Size: 1 Gal., Type: Bottle, Pkg Qty: 1, Package Type: Bottle