· How do you guys sterilize your soil? I''m not sure what the stores are like in the rest of the world, but here in the UK you cannot buy sterilized soil for love nor money! So how do you guys sterilize your soil? I only ever use the best soil available, but still suffer bugs, eggs, and...Should You Sterilize Potting Soil? | Garden Culture Magazine2015-12-11 · Trying to sterilize the soil in an outdoor growing bed in the oven or microwave is mystifying. But people want to know how to do this, even though it will a) smell awful, b) waste energy, and c) consume a lot of their time.