Ed. yer right. They are here to stay.. until Boiga gets here that is, or the Varanus in FL eat them. Or mongoose. Of course, if he has Hemidactylus turcicus from FL that's almost rare now in many areas due to H. mabouia eating them and out-competing them.
I live in CT... and I do remind people at every educational opportunity that the STATE stocked non native species into wetlands for fishermen to catch. this has a long history in New England, of course. But lately folks have started to realize that hey... those German Brown Trout live in the same place that native brook trout could.. hmm... and that many of our endangered fish are small and essentially bass food.
hmm..
Eventually, the world will be bullfrogs, Bufo marinus, Boiga, Hemidactylus, blue gill and ringneck pheasant... oh.. and cudzu, purple loosestrif and mowed (chem) lawns.
shudder to think.