Should I contact my landlord or... wait? Hexagram 7.4>40 Sort of urgent :)

Some of you know that the flat I am renting turned out to be infested by the carpet beetles. My landlords promptly organized Rentokil treatment. The last treatment was on 11th December, 2017. Since then - it was all clear. Today I've noticed one fresh dead larvae in the kitchen cupboard. A quick spot check revealed two new near the fridge. All dead (means the poison on the surfaces is probably still active) but definitely looked young. This is worrying. I am not a specialist on those insects so I asked whether I should notify my landlord ASAP about this and received:I also asked whether maybe I shouldn't notify them just yet but first wait until/if I will spot on more of them. Received:What do you think about it?