what is the difference between IS and IS2x? Does it mean you just have to use less sprays or is the euphoria any better. Does it effect other people more so than the regular version. Thanks for any input.
It just means that 1 spray of is2x is the same strenght as 2 sprays of is 
And you same more money by buying the stronger one and spraying less
nice one..
1x normal concentration
2x double the amount of pheromone concentration in bottle.