How to sterilize garden plot soil?

by Don Sanford
(Grand Rapids, Michigan)

I have only a small plot for tomatoes and the soil definitely needs to be "sterilized" due to the blight virus.

Can I saturate the soil with a bleach solution--and what proportions would I use for the soil and for the metal stakes and cages?

I don't want to lose all my tomatoes this year like I did last year.