Instructions say they need four weeks to fully do their job.
They've only been up less than 10 days.
I have this four-pack as well as another four set up in EACH room in the house.
I won't know until we get into the colder weather (and mice come indoors) whether they really work, but I'm hopeful.
#RankBoosterReview #Sponsored #SUNETLINK
https://www.amazon.com/SUNETLINK-Ultrasonic-Repeller-Repellent-Control/dp/B07BFSYJZ7