Special crate. The strength of the field drops off VERY fast. About six inches of space between it and anything steel should be enough to make it manageable. Also, they're not allowed to ship anything nearly that powerful by air...

You'd probably need more than 6" of space for that large disc. The ones I got are smaller than a quarter (diameter) and start to attract things from a few inches away. Someone order one so we know.

Oh, it'll attract things, but 6" should be enough that they can be easily detached...

Anyway, they're here. Powerful little suckers, can't wait to get some brackets and get them on the cabinets. Figure 33lbs pull force oughtta keep the cats from rattling the damn doors...

Would a magnet that strong kill someone with a pacemaker?

Very well could. They caution about that on the sites.

i was just thinking... what if you have steel plates or screws in your bones and you need an MRI?

also i have some HDD magnets on my pan

You should ask willwren about that.
But I believe most surgical pins and plates are titanium, aren't they?

im sure theyre made of something other than steel, steel would rust