When I bought my first Sulcata I read that they were mainly grass eaters. So I just pulled some from our lawn (we do not spray any pesticides). I feed it grass mixed with a spring mixture, but it always avoided the grass. I just got 3 other Sulcatas and they all avoid grass!! So my questions are, is the spring mixture I feed them enough? Is grass necessary to a Sulcatas diet? If so, what does the grass do to help Sulcatas? How do I get my Sulcatas to eat grass?!? Should I buy a certain type of grass specifically for Sulcatas?