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.
Laser Distance Meter w/Digital Level Rail, Â±1/16 Accuracy, 2 to 265 ft. Accurately measures distances to, in, and around all types of surfaces, equipment, and structures by transmitting and receiving laser reflection. Ideal for when greater accuracy is required for quick measurements.