It is cell wall because the cell wall keeps it safe.
There are many options like, bug sprays, calling an exterminator, or make sure you don't have fruit peels and stuff that attracts them in the house. <span />
Some signs that someone might be suffering from bulimia are:
Episodes of binge eating.
Self-induced vomiting.
Misuse of laxatives and diuretics.
Body image disturbance.
Feelings of guilt or shame about eating.
Depression and irritability.
Withdrawal from family and friends after meals.
Hypertensive.