Particles Won't Destroy

Hello,

I have rain particles that I downloaded from the asset store that work great, however, there is a small problem.. The rain particles go through houses, and I can't seem to get rid of them. I tried using the Particle Collider in the particle emitter, but that didn't work. I read online that in the new system, they have to hit a plane, so I tried putting it in a plane.. That didn't work. I also read a tutorial that said to go to the collision option in the emitter itself, and change the collision mode to world, and the min kill speed to an extremely high number (99999 in my case) so that they destroy on contact, but low and behold that didn't work. What could I be doing wrong?