Help - any ideas how to rust-proof

[Sheldon’s Mama]

Hi. So i bought two of these to be raised garden beds. They are actually steel containers split in half and legs soldered on to the bottom. I thought they were really cool and i would put rocks in them and then soil, and then two things of st Augustine grass/sod, and then plant seeds from that tortoise supply place to grow wildflowers/weeds. Once it started to grow i thought I’d let Sheldon wander around in there in the day to eat.

So when i went to get them the guy who made them sprayed something on his rag and wiped them out. On the car ride back it smelled pretty chemical-ish. It’s been a couple of weeks and they have been sitting in my driveway and now i notice they are rusting, so now I have to rust proof them before using them to plant anything. Of course it’s now occurred to me that whatever i use must be non-toxic so the soils, grass, and ultimately the weeds & flowers don’t end up contaminated.

Im just looking for ideas for how to rust proof these things so i don’t make us sick. Any ideas?

 

[Yvonne G]

It's expensive, but Flexseal works great.

 

[Sheldon’s Mama]

It's expensive, but Flexseal works great.

It's expensive, but Flexseal works great.

So the flex seal chemicals wouldn’t harm the soil, etc? And it would be safe to grow on top of it?

 

[Yvonne G]

So the flex seal chemicals wouldn’t harm the soil, etc? And it would be safe to grow on top of it?

I apply it then let it sit for a week or so before I add anything.