Description
Product Overview
BioGuard Liquid Stain Remover is a 16 fluid‑ounce formula designed to tackle the most persistent scale, dirt and stains in residential and commercial pools and spas. Packaged in a compact 3 × 3 × 9 inch bottle weighing 1.12 lb, the solution combines powerful surfactants with a gentle pH‑balanced base, ensuring effective cleaning without damaging common pool materials. Certified by BioLab Inc, the product carries UPC 017541664745 and ASIN B0BVGPN231, reflecting rigorous quality standards.
Usage
This stain remover is ideal for regular pool maintenance, post‑season clean‑up, and spot treatment of discoloration. Apply directly to the affected area or circulate through the filtration system for whole‑pool treatment. Suitable for plastic, vinyl, fiberglass, ceramic and painted surfaces, it is perfect for homeowners, pool service technicians, and spa owners. 
Why Choose Us
BioGuard stands out with its proven track record of 4.3‑star ratings from over 590 verified customers. The formula is engineered to work quickly while protecting surfaces from corrosion, unlike harsher acids that can damage metal fixtures. Manufactured in the USA, each batch undergoes strict testing to ensure consistency, safety, and performance, giving you confidence in every application.
Key Features
- Removes stubborn scale, dirt and stains in minutes
- Safe for plastic, vinyl, fiberglass, ceramic and painted surfaces
- Non‑corrosive formula protects metal fixtures
- Convenient 16 oz size for easy storage and precise dosing
- Backed by 4.3‑star rating and rigorous US manufacturing standards
FAQ
Can I use this remover on copper or brass fixtures?
No. The product is not recommended for copper, brass, marble, stainless steel, aluminum or galvanized surfaces as it may cause discoloration.
How often should I apply the stain remover?
For routine maintenance, apply once a month or after heavy use. Spot treat stains as soon as they appear for best results.
Is the formula safe for swimmers?
Yes, once fully diluted and circulated, the solution leaves no harmful residues and is safe for regular swimming.
Can I add this to my automatic pool feeder?
Yes, the liquid can be mixed with your feeder’s water flow; follow the dosage instructions on the label.
What is the shelf life of the product?
When stored in a cool, dry place, the unopened bottle retains full effectiveness for up to 24 months.







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