IM A LITTLE MIXED UP ON THIS TOPIC? IVE READ SOME PEOPLE WILL NOT DUE TO THE PASSING OF A WEAK IMMUNE SYSTEM! WHILE OTHERS WILL ONLY BECAUSE THEY DIDNT USE THE DIP! I TRY TO DO AS MUCH RESEARCH AS POSSIBLE ON CERTAIN TOPICS TO FULLY UNDERSTAND WHATS GOING ON. TAKE EVERYTHING FROM DIFFRENT ANGLES AND FORM MY OWN OPINION. SEEMS TO ME THAT MAYBE A WEAK IMMUNE SYSTEM IS NOT ONLY HEREDITARY BUT SOMETIMES TEMPORARY AS A PUP. ALOT OF FACTORS COULD GIVE THE MITES A CHANCE TO TAKE OVER.,