re: You need to leave your shoes outside your House.

Get a shallow plastic pan, big enough for both feet. Spread cheap towel on bottom of pan. Wet towel with bleach solution (1/4 cup bleach per gal water). Set pan outside front door. Step on towel to kill germs when returning home from store. Rewet or wash towel as needed.

Don't do this if you have purple shag carpet.