To Autogeek Online! Basic Steps
You might not be performing all of these but this is the general order.
First, give the car a complete wash from top to bottom. This prepares the finish for the next step. A wash solution of All Purpose Cleaner and Dawn will remove most of what's there. Once it's washed clay the entire finish to make it ready for the next step.
Any time some touch-up is required it's important to clean the area as thoroughly as possible. start with some mineral spirits and a toothbrush..and scrub the area. Once you're satisfied go over it with alcohol then follow the instructions on the chip repair kit.
I'd stay away from the wash & wax products normally found in WalMart.
Meguiar's Gold Class wash is very good and can be picked up at most local stores.