Biokleen Bac-Out Stain + Odor Remover review

Biokleen Bac-Out is the pick for parents who read ingredient labels. Biokleen says its live enzyme cultures break down stains and odors into tiny particles, which keeps the cleaning going after you spray, and that it removes stains, odors and urine from pet areas as well as fabrics, laundry, carpets and furniture. The page lists every ingredient, mostly plant-derived, and says the formula has no phosphates, chlorine, ammonia, artificial fragrance or dyes. A 32 oz bottle was $15.99 on Biokleen's store when we checked, and there is a foaming spray at the same price that clings better to the side of a mattress. A fragrance-free Free and Clear version exists but comes only in a 128 oz size at $39.99. The page does not name mattresses, so test on a hidden spot first. We compared documented features and published prices and did not test it.

Who it is for

Families who want short, plant-derived ingredients and a fragrance-free option.

Price

32 oz bottle $15.99 on the Biokleen store; 128 oz from $39.99.

Bac-Out Carpet Stain + Odor Remover - 32 oz. $15.99
Quoted from the vendor pricing page on November 11, 2026.

Key features

• Live enzyme cultures that break stains and odors into tiny particles
• Removes urine stains and odors from fabrics, laundry, carpets and furniture
• No phosphates, chlorine, ammonia, artificial fragrances or dyes
• Ingredient list published on the product page
• Free and Clear fragrance-free version sold in a 128 oz size

Strengths and weaknesses

• Strength: Low price for a 32 oz enzyme cleaner
• Strength: Full ingredient list with plant-derived sources
• Strength: Foaming spray version helps on vertical surfaces such as a mattress side
• Weakness: Product page does not mention mattresses by name
• Weakness: Standard formula includes citrus leaf oil
• Weakness: Fragrance-free version is sold only in a 128 oz jug

Key facts

• Price: $15.99 for 32 oz
• Formula: Live enzyme cultures
• Made in: USA, with US and imported parts
• Free shipping: Orders over $35

Where it ranks

Biokleen Bac-Out Stain + Odor Remover is No. 3 in our Best Mattress Stain and Urine Cleaners verdict.