  We study the backreaction of smeared and localised anti M2-branes placed at
the tip of the CGLP background. To this end we derive a Smarr relation for
backreacted antibranes at zero and finite temperature. For extremal antibranes
we show that if smeared they cannot have regular horizons, whereas localised
M2-branes can potentially be regular when polarised into M5-branes, in
agreement with the probe result of Klebanov and Pufu. We further discuss
antibranes at finite temperature and argue that localised antibrane solutions
with regular horizons are not excluded.
