1 Place the cotton balls in areas where mice are likely to enter your house, by doorways or heat vents, etc. 2  Another helpful deterrent is to grow peppermint plants near the entryways. 3  You can use the mint in cooking as well as it serving a deterrent purpose.
Nov 12, 2015. 20 kilometers (12 miles) for a 1 milliwatt beam. Laser light can travel 20 kilometers (12 miles) per-milliwatt that is contained within the laser.
The generated light energy has a wavelength of approximately 900 nanometers, with a beam divergence of 3 milliradians-equal to a beam width of roughly 0.3 m at 100 m or likewise, 3 ft at 1000 ft. Laser Technology products calculate distance by measuring the time of flight of very short pulses of infrared light.he generated light energy has a wavelength of approximately 900 nanometers, with a beam divergence of 3 milliradians-equal to a beam width of roughly 0.3 m at 100 m or likewise, 3 ft at 1000 ft. Laser Technology products calculate distance by measuring the time of flight of very short pulses of infrared light.