Wildlife Research Center Active Scrape 8 oz.. This time release formula allows the smell to develop and mature in bottle so you don't have to worry about a cloudy bottle on the day of your hunt. You can use this spray as a time release scent to make fresh scrapes the day of your hunt or you can use it any time before or after the hunt to keep scrapes lively. The smell of both urines in a bottle lets the dominant buck know that an intruder is in his territory and the smell of a doe in heat arouses him. This blend of urine includes both estrus and buck urine which is why it lasts longer than freeze dried scrape paste. Specifications for Wildlife Research Center Active: Manufacturer: Wildlife Research Center Container Volume: 8 oz Quantity: 1 Package Contents: Wildlife Research Center Active Full spectrum scrape scent for use in real and mock scrapes. Blend of doe urine with estrus secretions is combined with buck urine to simulate an intruding buck. Works great in the Magnum Scrape-Dripper.