Particles that don't touch each other

Hi! I was making a cave made of rocks and is really tedious set each rock in a position and I decided to use hair particles with 3 rock meshs.
The problem is that the rocks are touching and mixing, I want that the rocks never touch each other like in real world.


I don’t know if there is another method to do that :no: or a way to fix it.
Thanks!

The particle is just a point so does not know anything about its shape or volume when you display that point as another object
If you want real interaction between objects you need to use rigid bodies