Concentrated Red Tracer Dye - Highly Concentrated Fluorescent Water Tracing & Leak Detection Dye - One Gallon (128 Ounces)

Dye does not show up at double concentration or higher. Does not show with UV light even even at full concentration.

Septic tank

just sprayed results later

This helped me identify what and where water was draining.

Worked very well to find 2 water leaks.

That is what I needed.

I did not have any dislikes about the product

Everything was good

Worked great!! Saved me from a potential legal battle with neighbor.

Used this in a high caustic (potassium hydroxide, ph13) line cleaner. Tracer is stable and easy to see.