It is such a long ways down to put clothes in. All colors where safe from the Bleach it contains. It contains a special kind of bleach that is color safe. Reminds of some Color Safe bleach but in powder form in a pac. I've never been lazy about Stain treating but I think If a product can do it for you than it makes it more important to buy it. It also contains a softener like treatment that softens the clothes which is probably the orange in the pac. Only 1 shirt which was a light blue needed to be re treated for stain. The clothes where soft. If your low on time and you don't want to spot treat use these pacs. You'll be happy you did. Some kind of clothes I used where Blue Denim like Jeans,Cotton,and Silk. Colors actually looked really good and Tide Boost pacs do work!