Susan from Kapolei, Hi writes
After the vial is cracked, is there supposed to be a liquid that spreads to the cloth? If not, and a rattling sound is heard while the disk is shaken (sounds dry), does it mean that it's ineffective? You mentioned that it has a shelf life of about 1 year. How would I know that I'm not provided an old batch upon ordering?
Inside the raised portion of the disc is a tiny vial with a few drops of the active ingredient inside. Once that section has been crushed and the vial is broken open to release the formula, it will slowly move onto the filter paper between the flat portions of the plastic. The liquid volume is tiny, only about a 1 ml of soluion, so the filter paper will not look soaked or even heavily wet. If you hold the disc up to light for a few moments, you may see a very slight color change that is visible once the Gentrol Point Source discs are activated and it may slowly spread over more surface of the pad as time goes by. The vapor from the drops is slowly released over time and will remain effective for 90 days. One disc should be used every 75 sq ft of treatment area. Please view the product label for more information and instructions on how to activate this discs. If you are experiencing any issues, please let us know the lot number of the box that you received, and we will report this to the manufacturer and move forward with a solution for you.
Answer last updated on: 08/25/2022
