@tinytim : Yes, the app allows you to do it. I just do 10% unless it's terrible weather or something.
Shipt is another awesome service - grocery delivery. You can get a link from me or another user and get a years membership for $50 reg $99 (plus i get a kickback). After that, any delivery over $35 is free. I choose HEB, but there are other stores to select from. The app is so easy to use. I add things over a few days as I realize I need or want something, then I submit and choose the day (can be same day) and the one hour window during which I want it delivered. So just need toilet paper, laundry detergent, bread, and milk? Done! Or want someone else to haul your big cases of water, gallons, sodas, sports drinks, dog food, charcoal - done!
They will bring it to your door or on into the house if you wish. You can tip in the app after they leave, I usually do 10% depending.
Also as your shopper ships for you, they will text you through the app things like - Ms Bairds is out, would you like Sara Lee or skip? Chocolate is out, but there is vanilla, replace or skip? But usually everything is in stock. I just had this issue at Thanksgiving. You also get alerts like "starting shopping, anything to add?", "checking out now", "on my way".
I haven't been in a grocery store in over 30 days.