i would just put the soil in a baggie and microwave it.. see the link .. ken

Here is a link that might be useful: sterilization

I've used the microwave and oven sterilization methods. I just wanted to know if freezing would work also. It's miserably cold here so it might as well be good for something. lol That way I don't have to make a mess in my kitchen. By the way a great way to get the smell out of the microwave if you use it to sterilize soil is to microwave a cup of vinegar after you are finished. It takes the musty soil smell away immediately.
Karyn

i close the zip lock .. and never have a smell .... and i dont cook it long enough for the bag to explode .... ken

Most all insect eggs have survived for eons in temperatues far below freezing, so freezing will not eliminate your problem. freezing will kill the adults and larva off but not the eggs.

Actually, even the adults will survive. I refer you to this amazing article about it from Alaska: http://www.sitnews.us/0509news/052109/052109_ak_science.html