- We recommend installing yard deworming agents throughout the lawn to obtain the best performance. The sound pulse penetrates the soil and forces pests to evacuate the sound. 2. Use safety and humanity to prevent your property from ranging from mouse spores and destructive ground rodents. Rats and other holes were driven away. No chemical or poison. 3. Generally, it takes about a period of time to expel your mouse out of your garden, and then your garden will not be released by these disturbing small animals. 4. Because the blanket, clothing, or other soft items will absorb sound waves, do not place the above items in front of the sound wave electron exorcator horn. When using, please insert a higher position from the ground. Long -term use to ensure that the effect is sustainable