Bio-Shield® has been in commercial use since 1984. It is a powerful outdoor cleaner that gives amazing
results when used as directed. If Bio-Shield® has not worked - it has not been used correctly.
Bio-Shield® is Unconditionally Guaranteed to Work;
If you are a domestic customer that has used Bio-Shield® and are not happy with the end result we will replace your bottle and send the replacement to you at no charge. No questions and no conditions will apply.