2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26327We apply the non-perturbative renormalization group method to a class of out-of-equilibrium phase transitions (usually called ``parity conserving'' or, more properly, ``generalized voter'' class) which is out of the reach of perturbative approaches. We show the existence of a genuinely non-perturbative fixed point, i.e. a critical point which does not seem to be Gaussian in any dimension.4 pages, 2 figures. Submitted version with slightly amended discussion on earlier perturbative renormalisation group resultsStatistical Mechanicstext