Really bizarre habitat problem

[finaldecember]

i use regular top soil, $1.49 for a 40lb bag. It allows you to grow live plants in your habitats. Although, first i cook the dirt because i have encountered bugs coming out of the dirt, as long as you dont mind the smell of cooked dirt its great.

I used to have a dirt scented candle, so that would be no problem for me! But .... how do you cook dirt? I didn't even know you could do that.