I do not use Dry Idea deodorant, but found a rather large coupon that made it worth it to me to try it. While I only spent a little more than a dollar on this deodorant, I feel like I wasted my money because it is so awful.
It is a roll-on. I remember when all deodorants were roll-ons and have not used one since they started making deodorant in a stick form. The Dry Idea deodorant was goopy and it took a long time to dry. The few times I did not let it dry first it left big white streaks on my shirt. The smell was way too strong for me. I prefer a very subtle or no scent and as far as I could tell there was only one Dry Idea scent available. Because it is a liquid I couldn't help but wonder what would happen when the level of the liquid got low enough so that it had to be inverted during application.
On a positive note, it did keep me dry. But I ended up throwing it away because of all the negative aspects of it. Avoid this deodorant, even if you have a coupon.