Reporting requirements for bringing money into or out of the U.S; The FinCEN 105 form
Step One - Clean the Cart. You will need to wash the golf cart so it is spotlessly clean. Use sponges and scrubbing brushes to remove all stubborn areas of dirt. Use hot water because this will soften up and debris and make it easy to remove. Tackle all areas until you are happy that the cart is as clean as it can be.
Washing conventionally grown fruits and vegetables can also remove some of the residue left from pesticides or herbicides. Unless they're covered in dirt, it's usually best to wash fruits and vegetables right before you need them. Berries, especially, are prone to mold growth if they're washed and stored in the fridge.