Someone over on Crazy Guy (Neil I think) said that it came in a stream or a fogger model. I do not know if that was an accurate statement or not. You might look into the fox labs pepper spray too. I think I read somewhere that it had a fogger model too, again not sure though. In any case I too think that a broader stream would work better given the difficulty of hitting a moving target from a moving bike while sprinting away.

Your part of the world (Kentucky and Missouri) does seem to have more free and aggressive dogs that anywhere else I have ridden by a huge margin. I remember when it was like that in Maryland, but these days it is rare to be chased by a dog here.