Hermit crabs are pretty safe creatures. When handling them out of their habitat, be calm and they shouldn't pinch you. If they do pinch you, stay calm and wait for the crab to feel comfortable again so they will let go. Another thing you could try to get them to let go is slowly lowering your hand into their habitat so they smell it and will feel more at ease. I don't recommend spraying the crab with water if it is pinching you. That normally scares them causing them to hold on longer.
70 75
not really. the bigger the better.
3-6 months
They are just having fun.
no, hermit crabs live at the beach so it is not part of their natural environment. I suggest putting sand or coconut fiber in the bottom of the cage.
hermit crabs need a beach to lay their eggs on so they wont have babies in their cage.
No, hermit crab mites are specific to hermit crabs and will not harm you or your pets.
basically, whenever needed. check daily for anything wrong in its cage. change food daily.
No, for the substrate you can have coconut fiber. I have half of that and sand.
at Petland it costs at least 40 dollars
no we had over ten hermit crabs in one cage and they were all fine.:) since they are both different sizes you should keep an eye on them but you shouldn't worry because hermit crabs are very social animals.
A lot