See My reply 162. Jalapeno oils do not dilute with water but only spread. Copious amounts of soap will eventually dispel the oils, but being quite alkaline will irritate sensitive areas severely as well, if not to the level that they stop the oils from doing. Think about how much a hot Jalepeno affects the tissues of the mouth, then imagine how much irritation will affect other sensitive areas such as any scratches, cuts, thornpricks... and nose, eyes, and other areas -and the effect lasts for quite some time.
Oh, and before I forget; I did not know why at the time, but the reason you needed the used liquid soap dispenser was because you needed the soap portion of the mixture to act as an emulsifying agent, otherwise the jalapeno oils and the water portions would/will just separate. To ensure effectiveness, we would sometimes go to the extra effort to finely chop some of the Jalapenos and let them soak in the mixture overnight, then strain the stronger solution into the water pistol for a more effective result.
I once heavily sprayed two attacking dogs with the mailman pepper spray. They didn’t even slow down. They didn’t notice it at all. AFTER, they were quite red and irritated, and rubbing themselves, but that’s not the point. If it had been me they had been attacking, I would have been in trouble.
Now, I’m not sure of the difference between the PO issued mailman spray and any other.