Just got my hands on these after the season ended this year, so I have not had a change to try them out in the field yet. But man, they seem like they will work wonders. It is a very innovative product. You can hang them from the tree, stick in the ground, and can be used as yardage markers since they are color coded. Best of all, they are sealed with an O-Ring so you can pour your scent on at home, and not worry about leakage on the way to the stand or making your truck smell like a deer just marked it's territory in there. I'll update with more info after I get a chance to try them out in the fall.
They are available in the HunterSpot.com store. Just click the store link at the top, and you will see them under featured products.
Just like Jim, I get a hold of these scent tubes at the end of the season last year. Can't wait to try them out this year. Construction of these tubes is superb and I love the O-Ring idea, should keep the scent fresher then most other tubes or canisters on the market.
I'll have to try them with the Buck-cano foam lure! You guys might want to get a hold of this down wind sent comp. Might be a good sponsor for Hunterspot!