I like that it does what it says it does. I am less happy about the expense of it.
It works and the smell is tolerable--unlike some others.
Deer Stopper Concentrate is the only spray product that I have used that withstands rain showers for up to a month or so. I have 250 hydrangeas and a number of rose bushes on which I use Deer Stopper once a month and have not had any deer grazing on my plants this year. Expensive but it works and lasts longer than any other product that I have used in the past.