You hand pick the cats? Must be a bitch trying to get your eyes on those 11' tops... Bt is too easy not to use for those little boogers man. Minimum 2 applications. One on each full moon of late August and the one in September. Maybe weekly if you see they've gotten out of hand, but if you catch em early on those moons it should be smooth sailing and worry free.
2 times? i started applying BT way early once flowers started setting, and mine get drenched every 10 days. Its pretty fucked in my backyard we have a butterfly bush thats been around for 20 years, its good for the bees and monarchs an other fliers, but every white moth i see buzzing around the garden i try an kill it