The forms of the Italian direct object pronouns appear in the following table.

ITALIAN DIRECT OBJECT PRONOUNS
 
PERSON
 SINGULAR
 PLURAL
 
I
 mi (me)
 ci (us)
 
II
 ti (you, informal)
 vi (you, informal)
 
III
 lo, la (him, her, it)
 li, le (them, masculine/feminine)
 

 La (you, formal)
 Li, Le (you, formal, masculine/feminine)
 

In Italian, a direct object pronoun is placed immediately before a conjugated verb:

Se vediamo i ragazzi, li invitiamo. (If we see the boys, we’ll invite them.)

Compra la frutta e la mangia. (He buys the fruit and eats it.)

The only exception to that is when a sentence contains an infinitive. In this case, the object pronoun is attached to the end of it (note that the final -e of the infinitive is dropped):