In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 

to  get rid of rough feet.
Rub feet using a pumice stone every day after taking a shower.

Clean an egg shell
Take a dull end of a butter knife and tap on the top of an egg shell over a small bowl, once cracked remove about 1/4 of the top the egg shell with your finger, empty egg contents into bowl, rinse the egg shell clean with warm water, sit on a piece of paper towel to dry for an hour

How do I kill roaches?

Set out a shallow dish or bowl containing equal parts sugar and baking soda. Roaches are attracted to the sugar, but the mixture is deadly to them.