Received four new slings last thursday,two Pterinochilus Murinus,two Chilobrachys sericeus,got them from spider shop,local petshop didn't have any micro crickets,so i gave the two CS haif a small cricket each,the P.murinus had a full cricket each they are 4th instar,on unpacking the P.murinus weren't a problem,the two CS were rearing up even though they are a fraction of the size of the P.murinus,but i am sure that will change.