The effective time of Cat Butler Mouse Repellent depends on many factors, including the use environment, the number and type of mice, etc. Generally, the effects of Cat Butler Mouse Repellent will be visible within a few days to a few weeks. You may notice a decrease in rat activity within a few days of starting use. Over time, the rodent population will further decrease until it disappears.
However, it is important to note that each use case may be different and therefore the onset of effect will vary. If you are still experiencing rodent problems after using a Cat Butler repeller, you may need to reevaluate your usage and environment. At the same time, you can also take other measures, such as maintaining cleanliness and sanitation, blocking possible entrances, etc., to increase the effectiveness of rat repelling.