let's talk about how to use eucalyptus oil to repel cats what we're talking about is using something to deter cats from Gardens porches things like that the first thing that you need to know is eucalyptus oil is very very strong and it's considered toxic to cats if ingested it contains phenols which can damage the kidneys and so an deliver so eucalyptus oil as an extract again that's very concentrated very powerful and so when used in a garden it's typically diluted very greatly check with your veterinary clinic first to make sure it's appropriate to use in your environment environment and to use to deter cats but it is greatly diluted in water and generally sprayed at the corners of the garden or the porch to deter cats its it has a very volatile smell to it and cats don't like that a safer way and so eucalyptus oil which a lot of people use is citrus juices like citronella also orange fresh oranges you can cut and and put the orange juice on the corners or line areas to prevent cats from going through there it's kind of a natural way of doing it but again be extremely cautious with eucalyptus oil because it is again very volatile and if it's an ingested can be fatal and so make sure it's very very diluted and check with your veterinary clinic first