These devices express(emit) ultrasounds that are a nuisance to the rodents, and these bounce in the walls, roofs and soils, but they do not penetrate walls, for what if we close the doors, it(he) will not be effective more there of the stay where it is put.
On the one hand, me hablais of 180 meters of area, (3x60), and on the other hand of 300???
I recommend the modelos SC-11RC that covers 120 m. For every floor(flat) put in the lounge and in any case a SC-6RC of 40 meters in the kitchen to reinforce and to avoid unexpected visits.
Guarantee of 2 years
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