When coming home from a tropical destination, a jungle, or a developing nation, never bring your suitcase home immediately. Instead, take it to a laundromat and wash all your clothing — and the bag — in HOT, HOT water. Some places will even steam your bag for you.
Do this and you might avoid the horror that my sister encountered upon her return from a tropical country: upon pulling her favorite jeans out of her suitcase, she discovered a native spider had taken residence inside her bag … and given birth!