Brine Shrimp question

[Rusty Sprinkler]

I hatched out a batch of brine shrimp and froze it in little cubes. After feeding today I left the tray out on the counter and they thawed out for several hours at room temp. Can they be refroze and still used ?????

[Guppysnail]

I would not. The amount of ammonia they released dying would deter me as well as the amount of bacteria.  My rule of thumb is if I would not consume human food after something I don’t use it in my tanks.  I certainly would not thaw shrimp and leave it on the counter for a few hours and still consider it safe to eat.  
Those are just my guidelines.  Whether it actually is safe I do not know. 

[AllFishNoBrakes]

General rule of thumb is to not use foods that have thawed like that. Better safe than sorry.