vegetable garden bugging out?

i’m pretty good at checking the vegetable garden frequently for pests even though i have paddy as well. anytime the pesticide button shows up and i tap it, i get the message “uh oh, you didn’t exterminate the pests in time! now it’s up to fate” and im very confused. is it just a glitch? cause i’ll hit the pesticide button almost as soon as it pops up and it still says that almost every time