Two-lined spittle bugs are winged pests that damage lawns and other ornamental plants. Also known as froghoppers, adult two-lined spittle bugs grow about 3/8 inch long. As the first part of their name suggests, they have two bright orange lines across their black wings. When in flight, their bright red abdomens show clearly.

Adult and immature two-lined spittle bugs feed on grasses and other plants. While adults cause the most damage, the cream-colored nymphs attract more attention. As the nymphs feed, they produce a mass of frothy, spittle-like foam that hangs from grass blades. When populations are high, these pests move into other plants, from hollies to strawberries and asters.


Two-lined spittle bugs trouble lawn grasses such as Zoysia grass, Bermudagrass and Bahiagrass. But Centipede grass lawns are especially vulnerable to these pests. Lawn damage looks very similar to chinch bug damage. Early symptoms mimic drought. Affected grasses soon turn yellow and purple-brown. Entire grass plants wilt and die.

With severe infestations, highly visible spittle masses dot lawns and nearby ornamentals. Close inspection of the spittle yields multiple nymphs inside. Shady lawn areas are most susceptible to spittle bug damage, which peaks in years with heavy spring and summer rains.


Effective two-lined spittle bug control targets both adults and nymphs before they damage lawns and move on to other plants. Amdro brand offers two highly effective options to kill two-lined spittle bugs by contact and keep protecting against these pests for up to three months:

  • Amdro Quick Kill Lawn Insect Killer Granules provides a powerful full-yard treatment that strikes spittle bugs at ground level. Apply the ready-to-use granules with a standard lawn spreader, then water the treated area lightly to release the active ingredient. This product kills two-lined spittle bugs by contact and protects your lawn for up to three months.
  • Amdro Quick Kill Home Perimeter Insect Killer Granules offer a convenient way to treat smaller lawn areas and your home's perimeter. The easy-to-use granules come in a shaker container that keeps application simple. Apply the granules, then water the treated area lightly to release the two active ingredients. This product kills two-lined spittle bugs by contact and keeps on killing these pests for up to three months.


Excess lawn thatch encourages two-lined spittle bug infestations. If your lawn's thatch layer exceeds 1/2 inch, dethatch during its peak growth time. Take extra care with Centipede lawns, which are susceptible to dethatching damage.

Always read product labels and follow the instructions carefully.

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