The grid is the most common retail store Loop store layout, found in grocery stores, supermarkets, pharmacies, and many other places. Retailers use a grid layout to arrange products into densely packed aisles that customers can browse at their leisure. This configuration maximizes product display while minimizing space and is almost always the most familiar option for customers. While categories can be organized in any way, the best layout places every day and staple purchases at the back of the store, as shown in the Loop store layout. Customers will pass by promotional items and displays at the front of the store on their way to a commonly purchased item. This strategy increases the likelihood that a customer will buy additional items on the spur of the moment or as a supplement.