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.
A Laser Distance Meter sendsa pulse of laser light to the target and measuresthe time it takesforthe reflection to. return.For distances up to 30m, the accuracy isÃ3mm. On-board processing allowsthe device to add, subtract, calculate areas and volumesand to triangulate.You can measure distances at a distance.