This remarkable product is the best spot cleaner on the market:
The reason simply is that the people that make it have taken the consumer (you) seriously, and packed it full of highly effective cleaning chemicals. Foremost among these is d-limonene, a citrus extract which has remarkable stain removing properties, for the simple reason that as a terpene it is a small organic molecule that is also miscible with water.
This means that it will dissolve stains but at the same time wash out in the water. And even if it doesn’t wash out, you don’t really mind, as it leaves a nice citrus fragrance behind. Use it on clothes, hard surfaces, and even leather (for example ink stains).