A special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.The cost to make Mahogany planks is 1500 coins per log without the special logs. special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.
Ultrasonic pest repellents seem to work on a variety of different pests. The pest they tackle depend on the type of device with some repelling rats, mice, cockroaches, ants, and spiders and others repelling also squirrels, fleas, bats, etc.
Small mammals like Dogs, Cats etc. responds to 22-25 kHz US and Rats to 60-72 kHz. Insects like Mosquitoes, Flies responds to 38-44 kHz. What is Ultrasound? The hearing property of human ear is limited. Human ear can perceive sound with in a frequency range of 20 Hz to 20 kHz. The sound frequency below 20 Hz is Infrasonic sound and above 20 kHz is Ultrasonic sound. Human ear is not sensitive to US because the eardrum cannot vibrate as fast as US. Ultrasound has high frequency, so the wave is very powerful.