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.
up vote 4 down vote favorite. I find the functioning of a laser rangefinder confusing. The explanation usually goes like this: you shine a laser beam onto the object, the laser beam gets reflected and gets back to the device and time required for that is used to calculate the distance.Okay.p vote 4 down vote favorite. I find the functioning of a laser rangefinder confusing. The explanation usually goes like this: you shine a laser beam onto the object, the laser beam gets reflected and gets back to the device and time required for that is used to calculate the distance.