I ran out of Shout color catchers so my back up was a new Carbona. Wow it is amazing. You can use it up to 30 washes - I have a white board in laundry room so each time I was fabric I keep stick totals- up to 15 now. I do keep darks and lights separate but if I have a red, blue, green and black (all on the dark side) they all go in together.