Use field force planning software and be smart in terms of route planning. A system such as CACI's is low cost and saves a lot of miles

Do your homework: select stores that will result in the most profitable calls. Using sales and demographic data and software from companies such as Storecheck you can identify whether a store is over or under performing and determine which will result in the most likely change at store level

Employ a flexible resource so that you can add or reduce field force numbers depending on critical factors to your business, such as seasonality

Syndicate where possible. At busy times work with complementary companies to generate less time travelling and more time in-store

Review, evaluate and learn. Use data and analysis to establish the impact of your efforts in a statistical way