You can easily find online or offline dog repellents in the market. Its price is also not high. Speaking of the price, the price ranges from Rs.300 to Rs.3000. The company that makes it claims you can even use it to train your dog. This means it can also be used for dog training.
You must use a 9 volt battery to operate it. However, the device does not come with a battery. Because of this, you must purchase it separately. Its size is quite small. This makes it easy to hold in hand. As for how it works, it is said to emit an ultrasonic sound that keeps dogs away.
Also available on Amazon
Such a device is also available in the Amazon e-shop. According to the Amazon listing, the size of this device is 12.8 x 4 x 2.8 cm. The product description states that the range is up to 9.8 feet or 3 meters.
It can also be carried in a handbag. However, there are mixed reviews for this device. This means that while this device works for many people, it does not work for many users. So you can try it yourself.