A Strange “Leaf” on the Floor Nearly Sent Me to the ER — What I Learned About Saddleback Caterpillars and Why You Should Never Touch One Indoors

How to Stay Safe Indoors

To prevent accidental encounters:

  • Shake out yardwork clothes and gloves before bringing them inside.

  • Inspect outdoor plants before moving them indoors.

  • Check kids’ toys that were left outside.

  • Keep an eye out during peak caterpillar season (late summer–early fall).

If you find one in your home, do not touch it directly.
Use gloves, a jar, or a piece of cardboard to relocate it outdoors.

Final Thoughts

A creature so small can pack a disproportionate punch — as I learned the hard way. While saddleback caterpillars aren’t aggressive, an accidental brush against one can lead to serious pain or an ER visit.

The lesson?
Never assume that a strange “leaf” on the floor is just a leaf.

Knowing what these caterpillars look like — and how dangerous they can be — can help keep you and your household safe.