Sometimes it seems – we don’t know WHAT our animals might like.  
I saw this fact more and more within the essential oil community – when choosing which essential oils they would apply to an animal, and with how they would choose to apply it.  So many recommendations start out based on good information, but become a bit out of hand when everyone starts recommending its use without a lot of experience or knowledge base behind it.  I feel that Geranium essential oil really fell into this situation.  Sure, Geranium can repel insects, and many humans use it for many reasons.  But it is a really strong smelling, and floral essential oil.  Not always the most “animal appropriate” scent profile.  However, I would see blog after blog, and post after post of people recommending to put a bunch of Geranium oil onto a bandana or dog collar and put that around your dog’s neck to repel bugs.  To see the flaw in this – I just urge any human to do the same for themselves.  Soak a bandana in essential oils and put it around your neck for even an hour.  I’m pretty sure you will be overwhelmed by the scent fairly quickly.  And this mentions nothing of the quality of the essential oil being selected for use either.  The number of Geranium oils that I have smelled that are absolutely a poor quality and give me a headache – is quite staggering.
With all the hype online about the use of Geranium essential oil – I will see daily comments by well intending animal people recommending its use.  “Just put some drops on your dog’s collar.”  “Soak a bandana in this solution and put it on your dog.”  The problem is – the quality of the essential oil, species of the Geranium, source of the essential oil, or even proper recommendations for amounts to use – are never mentioned.  Leaving a person reading the comment to figure it out on their own.
What to do?  Create a veterinary Geranium-based blend, that will “tick the boxes” for someone who is determined to use Geranium essential oil – and provide some good sound instructions as well.