What kind of dog repellent artifact is good?

Let's start with ultrasound. Although the ultrasonic dog repeller is useful for dogs, it has certain restrictions on the distance. For example, if a dog repellent is opened in a far place, the propagation of this sound wave will be weakened because of the distance, which will not cause trouble to the dog, and the dog may be indifferent when it is opened. Therefore, when choosing the ultrasonic dog-driving artifact, we should pay attention to its sound wave frequency and its effective distance. Don't be afraid of dogs just because they have repellent. In case its application distance is too short, for example, some inferior products are only effective within two or three meters, even if they are opened, dogs can pounce on humans instantly, making dog repellent a chicken rib.

The main principle of arc dog-driving artifact is to drive cats and dogs through sound, light and arc, which is more intuitive in form. But in operation, because of the strong power, it is easy to cause personal injury due to improper operation.

Therefore, the choice of dog repellent artifacts should be based on your actual needs.