Don't spoil the children.
Kodomotachi o amayakashite waikenai.
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
to pamper; to spoil
if ... then; when; and; why don't you...?; the more (one does something); because; since