Laugh into a bottle
armbands and monster repellent
Lansium domesticum is the scientific name for a lansone. The peel from this plant can be used to make a mosquito repellent.
It has a Azadirachtin, a chemical compound that is came from the family of Meliaceae that can be use as a pesticide.
In order to make a mosquito repellent, you will need extraction materials. This includes chemicals that are soluble in the active ingredient of Tubang bakod.
Onions have chemicals that act as natural mosquito repellents. This liquid can be extracted from the onion into a liquid mosquito repellent
If you boil the atis leaves and separate the juices from the leaves, you can add them to a lotion recipe to make your own easy mosquito repellent. Try to use a lotion mix that is heavy on aloe Vera to soothe your skin and any bites you may get.
Orange peels can be used to make an effective insect repellent. The active ingredient can be extracted into a liquid solution.
On Fight My Monster, you can make your monster good by putting Giant Slayer on it (potion).
Coumarins...
They make sulfuric acid, sulfur dioxide, snake repellent, sulfa drugs...
Yes it is possible to make an Electronic Pest Repellent using Arduino and possible to make ultrasound for 30khz to 200khz frequency; you must make a rectangle signal with a frequency and amplify it with transistors.
Monkey Repellent Machine