I have used Ortho Systemic Insect Killer a few times already and it works very well. I've used it on all of my collection without any cons. Well there is one...the stuff stinks! But it gets the job done. I will be applying some soon before I bring in my tropical plants. I don't want to bring any bugs inside .
BTW Cobraplants.com (Sarr NW) uses Ortho Systemic on all of their plants and recommend its use.