Hello and welcome to the forum!
It is a good idea to start with the regular strength product and give it a test drive to see what your ‘sweet spot’ is. When you have discovered that, you can decide if you want to go double strength so as to be able to use fewer sprays, or not. Sometimes a sweet spot is 3 sprays, and having it double strength makes it hard to get that dosage applied. You’d either end up with the equivalent of 2 or 4 sprays, and could miss your sweet spot altogether.
here is a thread that explains it more:
Tell us a little more about your goals/hopes for pheromone use. You haven’t indicated why you want to use them, or what your target is. Knowing a little about you helps us make suggestions about products that are a good fit for you.
What’s your personality like? Are you shy or outgoing? Make friends easily or have some social anxiety?
How did you hear about Androtics and PHeroTalk?