maybe try ladybugs. hard to tell from the pic. i think i see at least one aphid pic 2 backround leaf. i'm guessing the black ones are gnats. the leaf holes in pic 3 likely snail. if you recently used the pesticide it will prolly kill ladybugs though. no experience with bayer, i would try a pyrethrin based pesticide half strength. although organic its tuff stuff (not good for the fishes.) i just learned a new one for snail. check out Nice fat manzano bush thread by cayennemist towards end.
p.s. i'm no expert but i hope this helps. and your not alone i just noticed whiteflies yesterday and thrips today. LITTLE BASTARDS!