Drinker caterpillar food

[Scotts]

Hi all. Could anyone tell me what drinker-moth caterpillars eat? I've read they eat reeds and grass. My question is what type of reeds and grass do they eat? Is it "normal" garden lawn grass? Also what other foods do they eat if any? Any help will be very much appreciated, thankyou.

[k4t3]

Generally find Drinkers on Couch Grass, a grass of verges and the bottom of hedgerows, a broad leaved grass- sure you can find it on this site by searching.

[Scotts]

Thanks I'll have a search.