2. Learn how to key in Alt codes on a laptop. Press the Num Lock key. (If it's blue or grey, hold down the Fn key before pressing it.) The Number Lock activated the gray or blue keys on your keyboard; they should be arranged in a square.Hold down the ALT key, hit the & then the # and then use these numbers.Ad.he ALT key can help you access alt codes, or characters that aren't readily available on a normal keyboard. These codes can be used to write in foreign languages, mathematical equations, or to add fun symbols to your messages. Below â is how to do it on a PC or a Mac, then a list of symbols such as Ï, Âº, â« and â¥ . Ad.
Peppermint oil, however, is especially dangerous. If swallowed, peppermint oil can cause gastrointestinal upset, a suppression of the central nervous system, and even liver damage. Some peppermint oils contain a derivative of aspirin, which is highly toxic to cats. Peppermint oils should not be used around cats at any time. The Safe Use of Peppermint with Cats.
  Peppermint is safe for dogs, in moderation. It can be used settle a dog's stomach (as with humans). However, avoid feeding your dog peppermint candies (or other food pro â¦ ducts) that contain xylitol, as it can cause hypoglycemia, which can lead to coma and death. + 75 others found this useful.es some dogs may be allergic to the fume of the peppermint oil but it depends so you should consult a doctor to find out if your dog is allergic to the fume of peppermint. 1 person found this useful. Edit.