i think if it burns bunny lips, it will burn any rodent. there's no study that i found except for rabbits, but this is new, so it's worth a try. if you do try it, please post your results.
in the study, they used one tablespoon per gallon of water. i used one tablespoon to one n a half pints [the size of my spray bottle].
it must be reapplied after every rain. in the absence of rain, i'm unsure how long it lasts.
that may not be important, if the animals truly remember. the scientists found that after tasting once, the hateful bunnys just stayed away from lettuce. you are training them.