Infestation
Large numbers of millipedes can migrate to the sides of houses and collect on patios and porches, and enter through ground-level doors and windows; migrations often occur in late summer and fall.
Identification
They have many legs and are called "thousand leggers"; there are several species; some large and rounded, some flattened and with yellow markings.
Control
Chemical control is not easy, pyrethroid spary around the foundation may be effective; remove excess mulch, seal doors and windows; de-thatching the turfgrass may help reduce populations.
