Here's what helped us significantly reduce their population:
- Reducing the moisture in the garden.
- Setting the traps with wet rolled up newspaper and fruit (specifically using half a cantaloupe turned upside down in the garden).
- Protecting the seedlings by cutting the bottom off some plastic pots or old yogurt containers. We put the plastic containers around the seedlings, twisting them into the soil to dig them in. This helped to keep the bugs out.