Note that lavender and tea tree essential oils, while not mentioned in the original article, are also reported by other sources to have tick repellent qualities. However (important!) – several essential oils are toxic to pets. Tea tree should not be used on dogs and cats. Here is a full article with a list of essential oils that are harmful to animals.
If you have been bitten by a tick, please seek professional medical advice. Also, if the tick has been removed, keep it to show to the physician – as it will be of benefit to identify the species (and also make sure that its head is not still buried in your skin!) Sorry for the grossness, but better to know what to do.
Read more at herbs-info.com