Jaclawn, you said that a customer used some GrubX. The formulation of that product changed this year in my part of the country (midwest). It used to be the same active as merit but now is that same as MachII. I noticed this at the hardware store one day. I use merit and machII on a rotating basis now. Half my yards get merit one year mach II the next, the reverse next year. I say kill'em all let god sort them out
Take care of your customers and they will take care of you.