First of all I am meticulous in keeping my cage and birds clean. Now I am seeing tiny bugs in their seed cup. I know it's not the seed because I threw away the first container when I saw the bugs for the first time. I then went to a different pet store to buy more seed....guess what....more bugs. I remove all food, spray with mite and lice control and the bugs go away for a week or two then they are back. I spray my two little ones in case they are the carriers but why are the bugs coming back and what should I do? I clean their cage religiously and never let any perishable food sit overnight. Help!