Really?
That crap really works well. I usually just dump the 1oz bottle into a gallon of fuel. That 1oz is enough to make EVERY tank smell like the scent you put in. And its strong.
People used to look around all the time when they smelled it. They'd smell cotton candy and the kids would be going nuts, parents couldn't figure out WHY they were smellin it till we told them it was the cars.
The Root Beer, Grape, Banana, and Cherry are especially strong smells. They'll stick around for a good 10-12 seconds each pass the car makes.
I got a bunch dumped on my hand once. It took nearly a week for my hand to stop smelling like bananas. It was an embarrassing first few days at work when the scent was strong.