My rats have gotten the mineral salt licks, regular salt licks, apple licks, carrot licks, and celery licks. They love them all, and it has never made them sick.

And they even love my skin salt, hehe, lol.

Tikeyas_mom, salt is required for all living creatures, without salt everything would die. TLarge quantities can kill, yes that is true, but it is very healthy for them other wise. They don't chew it, they lick it. It does not wear down their teeth.