I don't do any of those things....
I don't buy things that are dry clean only
I get my oil changed every 5,000 miles (Toyota recommends this)
I don't use baking powder in my fridge
I never looked at the directions on the shampoo.....ok I just looked and none of mine say repeat.

I've always wondered about the expiration dates thing and if things are good past their dates or if it is just a "suggested" date.....