I recently realized I have a grub infestation, well the skunk found it first. I initially thought it was try grass and by the time I realized it wasn't a lot of damage was caused. I went to Lesco and got Dylox 6.2 and put it down. A few hours later it rained about .32 inches so I assumed that was enough rain to get it in the soil. About 24 hours later I just checked and it looks like the grubs are still alive and well. Does this mean my treatment didn't work? What did I do wrong? Or am I just being impatient?