9. To a child. A gadol who sends mishloach manos to a katan does not fulfill his chiyuv (שו"ת שאילת יעב"ץ ח"א סי' ק"כ, כף החיים סי' תרצ"ד סקי"ב ).
10. To a drunkard. The actions of one who is drunk like Lot, i.e., who is not aware of his conduct, are meaningless (רמב"ם פכ"ט מכירה הי"ח ), and he is not considered sane. Thus, one who sends him mishloach manos is not yotzei. However, if there is enough time left in the day for him to sober up and see the mishloach manos, the sender is yotzei (שו"ת משנה הלכות ח"ד סי' צ').
11. To a lender. One should not send mishloach manos to someone who lent him money if he would not have done so otherwise, due to the issur of ribbis. If, however, he had sent to him in years prior to the loan, he may continue to send to him.
