In hotels, dormitories and even private homes, bed bugs are literally crawling out of the woodwork. Experts think the resurgence is due both to a lack of routine spraying for the pests and an uptick in international travel in recent years. The varmints, who feed at night and look for hiding places during the day, sometimes end up in travellers' suitcases and clothing.

Follow your nose. The bugs emit a sickly sweet odour. If a hotel room has one, leave and tell management why. Itchy pink bumps like mosquito bites could mean trouble: Look for reddish brown bugs about 5mm long, and rust-coloured stains on sheets.

Keep them at bay. The bugs travel from the floor to the bed to feast. Smear petroleum jelly around the feet of the bed to stop them.

To learn more about bed bug treatment, visit BedBugsGuide.com