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.
If you have a guide rod laser, it's even easier as you just match the dots at 20 yards and it's perfect without firing one shot. (If I recall correctly, the lasermax guide rod is zeroed at 20 yards from factory) My back ups are a tad off and I don't have a sight pusher to fix them so sighting the RMR was a bit harder.