Donna, I'm sure this is a really stupid question, but what do you mean by "in a grid pattern"? Do you put it down like a checkerboard?
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Hi Kathleen, long time, no chat. Hope life has been treating you well.

You should know by now, there are NO stupid questions ... Yes, the grid pattern is basically, draw a straight line somewhere on your property; parallel to the driveway, straight across the widest part of the lawn, whereever. Then you begin applying 1 measure (IIRC it's a teaspoonful) of the powder in a little pile, go a foot and repeat. Once you complete the first line, you move a foot to the left (or right) and repeat ... and repeat .... and repeat until the entire yard is covered with little white mounds. Water to activate and to wash the little beasties into the soil where they can get ready to go to work. Or apply just before a good soaking rain is due. BTW, there is a "delivery system" available which gets rid of the incessant bending/stooping. It is a tube with a plunger which delivers a measured dose each time you put the tip on the ground and push. I have one and LUV it. Purchased it when I bought the most recent supply of Milkey Spore.

Hope that helps ... if not, ask away.

DP