In general:

A poacher steals creatures. So he is as the burglar and this stands for a penetration in the way of life to understand others.

Psychologically:

Poachers (or poaching) brings unconscious processes to express that impede or jeopardize and disrupt the internal harmony, often dreaming of poaching (or poachers) is related to sexual needs.

Traditionally:

European
– To dream poacher (or poachers): a very favorable dream; just a little you must care for a while on your speeches, and all businesses will be crowned with success.

* Please, also read dream meaning of burglar, crime.