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.
Remove the pillow from pillowcase or sham, if applicable. You can also throw these pillow covers and/or shams in the washing machine along with your pillows. 3. Put your pillows in the washing machine. The trick is to wash at least two pillows at a time to keep the washer balanced. 4. Add your detergent as normal.