Birds are cutes.  Mostly people like birds. Feeding and playing with them.  On the other hand, birds often make us not comfortable. Their droppings and floating feather are big nuisance for us.  Especially, if they live and nesting in our house and they breed there. For sure, they will make you have a headache.

You need a proper method as a good solution for this bird problem.  You can use bird poisonous bait or install a product of weatherproof spike.  However, most of us, will avoid poison bait and installing the spike to cover large space or building is costly.  You need a simple, cheaper and less maintenance method to handle the birds and an ultrasonic bird repeller may be the one of many bird control method to choose from.  There are several favorite ultrasonic bird repeller products you may choose below:

Bird-X BG Balcony Gard Ultrasonic Bird Repeller

Bird-X BG Balcony Gard keeps birds, especially pigeon, away from your balcony, terraces and house decks.  The gadget emits ultrasonic wave and needs no maintenance.

• Dimensions LxMxH (cm): 13.3 x 17.1 x  8.2.
• Auto On/Off
• Wall mounting.
• No need assembling
• Motion-Sensor Operation.
• Price : $ 33,32

Some people said that it is a great product. Most of The birds will leave in the first week.   You can set it to motion sensor so you can still keep the birds outside.  In the lowest frequency, you can still hear the sound, but it will not bother you if you install the gadget out front of the house.  If you do not want hear any sound, you may set it a little higher frequency.

Some other people said that it have no effect and do not recommend this gadget for those who need to get rid of birds.  Mostly unsatisfied user complained about ineffectiveness and the noise it made.  Their family and pets like a dog can hear the sound.  When they set to high frequency, it gave them headache after several minutes.