I often find small green caterpillars eating holes in my brug's foliage, Alda. Take your flashlight out after dark and look with the light on the backs of the leaves. I just pick them off with my fingers, there usually aren't all that many.
The other pest to watch for on brugs is spider mites. I've kept mine at bay this season just by spraying down the foliage on the plants with the hose maybe once a week if it doesn't rain. Mites hate the wet.
