Without a doubt number one is centipedes! The ones on Dominica and St. Kitts were so huge! You spray them with Baygon, an insecticide, and they laugh at you. You get a shovel and start chopping them into pieces from fright and each individual piece snickers at you as it scurries away to some secluded area in the garden. There they join forces with other bits and pieces and plot how to frighten you into the next decade when we all meet again.
The ones in Ohio, although much smaller, are just as frightening. LOL!
What scares you? :-)