Blessed salt
If possible, it is also good to have a small container of blessed salt in your home. You would have to specifically ask your parish priest to provide that for you and odds are likely that your parish priest would not be familiar with it. This is one sacramental that is often neglected and is not typically used in parishes. However, it is a powerful weapon against evil as can be seen by the following portion of the blessing said by the priest found in the Roman Ritual.
ALMIGHTY AND EVERLASTING GOD, WE HUMBLY IMPLORE YOU, IN YOUR IMMEASURABLE KINDNESS AND LOVE, TO BLESS (+) THIS SALT WHICH YOU CREATED AND GAVE TO THE USE OF MANKIND, SO THAT IT MAY BECOME A SOURCE OF HEALTH FOR THE MINDS AND BODIES OF ALL WHO MAKE USE OF IT. MAY IT RID WHATEVER IT TOUCHES OR SPRINKLES OF ALL UNCLEANNESS, AND PROTECT IT FROM EVERY ASSAULT OF EVIL SPIRITS. THROUGH CHRIST OUR LORD.