3-5 days: Mice, cockroaches are eager to interfere with their physiological and nervous systems because of the ultra sound, the creatures hidden in the dark will be forced out.
2-4 weeks: Receive the best result.
1 month later: completely cleared ( depends on the range of pests).
Forever: Daily Family Environment Optimization.
Works anytime : The repellent will constantly emit 22~65KHZ high-frequency ultra sonic wave so you will always be pest-free at home regardless of what time is it.