Hey, neighbor!
Sevin works on cabbage loopers in your area? The only thing that works here is Dipel. There used to be huge fields of cabbage and potatoes here and most insects are immune to sevin. And your lettuce is still going? Mine went to seed about 3 weeks ago and I fed it to the chickens. They really enjoyed it!
Yes, Sevin seems to work in my backyard garden. The guys growing soy and cotton in the local fields apparently don't use anything so benign.
my grandma used to feed over ripe cucumbers to the chickens and they went nuts for that stuff.