Bagworm Frass on Pool Deck: Not Eggs, Just Clean Up

Leyland screen around pool infested with bagworms. Trees slated for removal. Black round objects covering cement—owner fears eggs.

ID: Frass (Insect Droppings)

Black pellets = bagworm excrement from feeding. Not eggs. Eggs are inside female bags (which are on trees).

Reality Check

• Bagworms rarely kill trees (defoliate only).
• Trees may recover if treated.
• Frass washes off deck.

Control (If Saving Trees)

• Hand-pick bags.
• Bt late June.
• Insecticides on young larvae.

Don't remove trees solely for bagworms—they're treatable.