In my world, dogs and cats are at war over a disputed territory between their kingdoms but they are at an impasse and have been for many years.
Somehow the dogs find out that cats are terrified of cucumbers. https://tenor.com/view/cat-scared-cat-vs-cucumber-gif-13209546 They want to use this fact to finally win the war by driving the cats out of the disputed lands.
There is no technology in this world apart from what can be achieved with mouths and paws, but cats and dogs are roughly as intelligent as terrestrial humans.
Assuming that dogs have access to extensive fields of wild cucumbers, how best can they use them to win the war?