Good to know...Watermelon Picking Tips: Pick a dull looking watermelon. A shiny appearance indicates an under ripe melon. The creamy spot on the melon is where it was resting on the ground. It should be a yellowish creamy color. The darker the color of the creamy spot, the longer it was on the vine sweetening up. If it is white (or not even there), put it back, because this indicates an under ripe melon.
The only SPOT REMOVER you may ever need ~ Mix one part Dawn dish washing liquid with two parts hydrogen peroxide; pour or spray it directly on the stain, and watch it disappear like MAGIC....will need to try this out