I am in NJ and have had A. incarnata planted for several years. No pesticide etc. on the plants. I have seen more monarch activity this year than the last several. It has also been a very wet year after several drought years. The milkweed has been very happy this year along with the Monarchs. I had two monarch eggs I brought in along with two tiny monarch cats. They had all molted a couple times and the two biggest were quite large. They were getting to the size where I had to change the milkweed and clean out the frass twice a day. Yesterday morning I did just that. They were being kept in a garden window but it does not get too much sun or too hot in there. Anyway I came home yesterday and found too of the cats off the milkweed and dead. They were limp flaccid. However the weirdest part was that there were ridiculously huge puddles of green nearby.....much more than seems possible and spread out over a couple areas. It looks like the caterpillars expelled a HUGE amount of liquid, probably with some force. They must have been very bloated(?) prior. Any Ideas???!! They were normal that morning, but I was wondering if they had a bacterial infection of some sort or if there was possibly something else on the milkweed I added that morning (from my yard and not spratyed). I bleached everything, and put the remaining two cats on a new milkweed and they seem fine this morning. Nothing else physically damaged or messed with these cats. So strange!!