Hello Antman!
You don´t have to apologise for your questions thats what the forum is for!!
The german words are Sand (for sand) and Lehm (for loam)... see this links:
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For an foraging area you can use this PVC-Box
[url=http://www.ameisenshop.de/en/shop/pd1674981297.htm?defaultVariants=search0_EQ_klein_AND_{EOL}&categoryId=2]http://www.ameisenshop.de/en/shop/pd1674981297.htm?defaultVariants=search0_EQ_klein_AND_{EOL}&categoryId=2[/url]
or an simple aquarium (this article is to heavy so we don´t sell it but you can bye one in every pet shop next to you). For the beginning you don´t need a great one, so you can now buy a small and later a greater one. Or you can buy directly a greater one (I think its better and less expensive).
There are many possibilities for outbreak safety but not everything could be used for your ant specie - Pheidole have vigorous manibles and can bite the net away. We have an aluminium net, but the mashes are not small enough for your specie. So you only can use vegetable oil or talkum powder that you must remake time after time. If you want you can additionally put the foraging area in a (not high) basin with water (similar like "underpots" for the plants). So you will have two barriers: the oil and the ditch.
I know that I wrote a lot, let me know if you have some problems with the understanding of my "terrible" english

)
Greeting
Bianca