Soil Blockers

I have a soil blocker, and when I used it, it was very good, but as I have a good number of plastic cell trays of various sizes I am using those till they disintegrate, rather than just tossing them, so at the moment I consider what I have as an investment
On reading you post I was thinking rather than a blow torch, a soil blocker would be a safer thing for your husband, but then the one I have is made of metal and if he got hit with that it would leave quite a bruise