Once you have decided to purchase this best selling sonic cat repeller from the Big Cheese company, you neeed to ensure that you purchase either batteries to power it or better still get an official power adapter.  If you choose to go down the battery route then you will need to use two 9v alkaline batteries - the square ones.  Dont worry the big cheese cat repeller uses its power sparingly and remains on standby most of the time in fact it only calls on its power when something triggers off the sensor.

Not sure you want to rely on battery power well as long as you have an electrical socket nearby your best bet would be to purchase the big cheese cat repeller mains adapter STV610.  With the mains adapter in place you can rest assure that the cat repeller will work perfectly for many years to come.

Replacement posts are also available so if you have a garden full of children with footballs and the cat repeller gets hit then you are able to get a replacement post if it gets bent or damaged.