Belittling acts in the Sukkah:
One may not do any belittling acts inside the Sukkah. Thus one may not clean the dishes inside the Sukkah, although drinking cups may be washed down.
May one use a Sukkah as a short cut?
No. One is not to make his Sukkah into a shortcut to reach another area.
May one hang laundry in the Sukkah?
May one allow a gentile to enter one’s Sukkah?
One should not invite a gentile into the Sukkah as this causes the holiness to leave. Therefore one should have a gentile maid clean the Sukkah inside.
May one urinate in a Sukkah?
May one have marital relations in a Sukkah?
Some Poskim rule it is permitted. Other Poskim however rule it is forbidden have marital relations in the Sukkah.
May one wash Neigel Vaaser inside the Sukkah?
 Lev Chaim 3/140
 Shach Emor; Midrash Pinchas; Divreiy Yatziv 2/274
 M”B 639/9
 Minchas Elazar 4/73
 M”B in Biur Halacha 639 “Vial”
 Piskeiy Teshuvos 639/4