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.
Larger size range for custom products: Laser fused stainless steel angles, beams, tees, and channels can be produced in lengths up to 40 feet, widths up to 40 inches, and heights up to 80 inches. Small sections (1 inch X 1 inch) can be produced as well, with a minimum thickness of 1/8 inch.