It was not doing its job the first 3 days as I saw the mouse still scampering around over the counter top but for a week now I haven't seen the culprit.

Well the little mouse kept coming back until he was finally caught in a trap. So it did not deter him. Very disappointed in this. Would be pleased to hear if it has worked for others.

Used these during the mice plague they helped with keeping the numbers down

Seems to work...haven't seen the mouse that made me buy this. Don't like traps..don't hate mice..No signs of presence of speedy.

This is useless! There were rodent droppings right underneath it after the first night of use.

a big with the mice plague in our area. works great. :)

Doesn't work

I bought a 3 pack of these sonic repellers, and on the first night had the mouse I'm trying to get rid of, sit and eat bananas about a metre away from where the repeller was plugged in. Appears to be totally ineffective, I wouldn't waste your money

Doesn't work

Brought this as we have had mice this winter and it done nothing. They are still coming in the room.

Good - with a couple of issues.

Worked very well to rile up mice and draw them out of hiding, however did not drive them out of the house as I had imagined it would.Combined with an appropriate mouse trap, the problem cleared up quickly.Unfortunately it does cause pain to the mice, which I had not been prepared for.

Mice ran all over this

Have put 3 of these in different parts of the house and I literally say a mouse run over the one by the microwave oven on more than 2 occasions. I do not believe they work.