Very little. Simply keep it plugged into a functioning electrical outlet and ensure it is not obstructed. In most cases, multiple units are recommended because ultrasonic waves do not effectively pass through walls or large obstacles.

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READ MORE:
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https://repellio-pest-repeller-best-reviews2026.jimdosite.com/
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https://repellio-pest-repeller.blogspot.com/2026/06/repellio-pest-repeller.html
https://sites.google.com/view/repellio-pest-repeller/
https://repellio-pest-repeller-sound-price.jimdosite.com/
https://repellio-pest.systeme.io/repellio-pest-repeller-sound
https://repellio-pest-repeller-sound.blogspot.com/2026/06/Repellio-Pest-Repeller-Sound.html
https://sites.google.com/view/repellio-pest-repeller-sound/