Yeah.... it grows a fungus that is toxic.
Luckily I can use it fast enough that it doesn't have time to grow and I use a mixer to make a TMR so they won't be able to pick out the taters to gorge on.
I am worried about the sulfer levels-- it would replace what I am useing now to pull down the sulfer levels.
I found Irish potatoes and their sulfer level is really low- so they are going to work great--- but latter in the year the processor will switch to sweet potatoes. I have to take both to get either and i have to decide soon.