everyone has their own methods..i like to feeze it..cuz it seems like it would preserve it better..rather than letting heat get to it..i dont use tinks..i mainly use wildlife research center scents..here is a link to a website that collects and immediately freezes its product..some people use their own urine..anything can work..deer are curious animals..here are both links..read up on the bottom link..its intresting

http://www.spdeerscents.com/index.htm

http://www.fastestbows.com/articles/TWF/synthetic_deer_lures.html