Green Tracing Dye - Highly Visible Concentrated Fluorescent Leak Detection Dye - 1 Gallon

Very easy to use and effective. Very good value.

Still havent found the drains. It does stain heavily so be careful not to spill or get it on your hands. Takes a long time to wear off! May work better for othera needs not so much for ours. We wanted to know wherw are down spouts and floor drains led and.atill no.clue.

Easy to see in daylight. Used it to confirm patency of positive crawl space drain.

great for verification of under ground utilities

used it for halloween / a little goes a long way

Suspected a sewer plumbing break because black water was making to my dump pump. Poured 1/2 a gallon of the dye into the kitchen sink. Day later my sump pump pit was green like the Chicago waterways on St. Patty’s day. Stuff works!

The liquid was not green at all, and was closer to a red black and totally useless.

this looked cool in my fountain under black lights

A little goes a long way, and this stuff does show with UV light as advertised.

We actually bought this tracing dye to turn our pond green for St. Patrick’s Day. It worked perfectly, the color lasted a few days and it was great for the occasion.