I would not bake soil. it will kill all the good stuff, if it gets that bad then buy differnt soil. But ,i use gonats,works great. as a soil drench. Drench once,the 2 weeks later drench again.start out with 10ml a gallon. if that doesnt do then try 15ml. But it should wrk great,. I used gonats for a bad infestion of springtails. WORKS