this works almost like tunnels, but instead it's poi that produce these infected camps,
so you have to be in range of poi with an offense that is high enough to activate the poi, then it produces infected camps
you don't want the camps to be low because if they are much lower than your offense then you don't get any cp or rt from them
so the rule of thumb is, if your offense is, say 23, get to 24-25 level poi, you'll get convenient levelled infected camps