Something has been eating my broccoli and kale plants. I haven't seen anything on it, so I'm not sure what it is. It started eating the leaves and has progressed to eating stems and recently seems to have cut one of the broccoli plants down to the base of the stem just above the soil.
Particularly with the kale, sometimes I will see leaves cut off and left on the soil.
I had been using bacillus thuringiensis - spraying it weekly and also after rain on the leaves. It seems to have not been very effective, if effective at all.
I also noticed similar damage to a christmas cactus that was left nearby the broccoli and kale. We moved it to the deck about 15 feet away, and the same sort of damage still progressed - cutting off the leaves and dropping them in or nearby the pot.
I'd prefer a solution that doesn't involve pesticides that can be harmful to humans.
Update Here are the only "tracks" (nondescript horizontal streaks) I found after one night. There was not any more plant damage that night.
Update 2 I had placed some cut paper towel tubes around the bases of the stems because at one point, I suspected cabbage loopers. Between 7:30 am and 7:00 pm, something knocked or pulled the tubes off and destroyed another broccoli plant, leaving most of the stem. And it ate a bit more of the kale too. Also, I saw some more tracks.
I set up a camera in front of the damaged broccoli stem and a fresh cabbage leaf three times in the day and early evening in the same spot but did not catch anything.
But I just saw a squirrel rooting around on the deck nearby, sniffing and nibbling at some potted plants.
I ended up building a cage to enclose the kale plants that remained. Still not sure what the pest was, but the cage seemed to prevent further damage.