Exposition: The Post Hoc Fallacy is committed whenever one reasons to a causal conclusion based solely on the supposed cause preceding its effect. Of course, it is a necessary condition of causation that the cause precede the effect, but it is not a sufficient condition. Thus, post hoc evidence may suggest the hypothesis of a causal relationship, which then requires further testing, but it is never sufficient evidence on its own.
Simply make a cup of soap nut 'tea' by soaking 4 or 5 bagged soap nuts in a cup of very hot water for approximately 3 minutes. Pour both the soap nuts liquid and bag in wash. Remove from washer at end of the wash to dry (leave soap nuts in bag). Re-use 3 to 5 times. Soap nuts are no longer effective when they thin, turn soft, mushy and very light tan or gray.
Size: 1 pack. I use the plastic organizer over the back of the laundry room door. Instead of shoes, I fill each pouch with various household items that usually get lost in drawers: mailing supplies, glue, batteries, camera, binoculars, flashlights, coupons, glue gun ~ you get the picture.