The Powerful Ultrasonic Pest Repeller by Fos Dool arrived safely, smoothly and as scheduled.
It simple to use device put the concept of using dangerous chemical pesticide at ease. You remove the device from the box, plug it into an outlet and that is it.
For device like this, what I have done in the past is to use it for 1 month and unplug for 2 weeks and replug. What happens is that the insects will get use to the frequency so it tends to be ineffective so you have to do the unplugging in order to make this device more advantageous to your need.
Typically, this type of device takes a few days for it to begin to work, you may see more inserts the first few days of use because they are trying to escape from the frequency. I actually saw a fruit fly laid upside down on my countertop the day after it was plugged in.
For a little shy of $16 dollars, I rate this Powerful Ultrasonic Pest Repeller by Fos Dool 4 out of 5 Stars. I hope they will invent a multi-frequency pest repeller that can change different frequencies every few weeks so it can constantly work and the insect would not get use to it.
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