You have just spent all morning cleaning and in runs a wet dog straight across the lounge and jumps on the sofa, paw prints everywhere. You remove most of the marks by hand but a few spots will not come out no matter how well you try. 

Later that day you hear a noise from the next room, a glass of orange has just fallen onto the floor. You soak up as much as you can but after it has dried you have a nice orange patch on your cream carpet.

Having a stain protector applied to carpets and upholstery will help with situations like this.

You can apply this directly to new carpet or upholstery that has just been purchased. It really is a worthwhile investment and will help in the long run going forward.