Do roaches need a source of water?

I agree they dont need water crystals if they have constant access to fruit and veggis but I do it just in case for some of mine and I do see them use it. Some times they sit on top of it to molt in bins that dont have soil. I get my water crystals a lowes its lasted a long time.

 
I have old hissers, at least 3 years old. When younger they did fine with water misting. However now they aren't as good at eating and I put a very shallow water dish with a flat stone so they can drink they get thirsty easily.

 
To clarify: yes, they need a source of water. However, they do not need a dish of water. In fact, I would discourage using a dish as you'd end up with drowned nymphs. The best way to provide water IMO is either to spray the sides of the enclosure which allows them to drink from the sides, or (what I do) provide vegetables and fruits that have moisture. That's more than sufficient.

I have used the water crystals, but stopped because they don't seem to like them much. The crystals are also plastic and I don't see any good coming of that.

 
All my roaches (Eublaberus, Panchlora, and Blatta) have water bowls with charcoal. 

Eublaberus adults will drink from the bowl when I fill it, but nymphs in the substrate eventually spill the bowl into the substrate. 

 
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