help!! something eating leaves.

i got 6 big plants in a green house. the plants look fine but something is eating the leaves on the underside. any ideas what it could be? what should i use to stop it?

looks like thrips to me. google it... i got a small prob with them too.. going to consult on remedy also..

Catepillar ?

look what they do .

didnt see the last photo. doh.. maybe catapillars after all..

ive never seen catapilars in there

whatever it is its a chewing insect, like a catapilar or grasshopper, these are easier to control than sapping insects like thrips. you could grow some garlic or mint along side the cannabis to discourage them. another way is to make a spray from fresh jalapeno and garlic. just blend them in a blender, add about 90% water to the mix, then filter it with pantyhose, add a drop or two of dish soap (or other wetting agent) and put in a sprayer. spray all leaves, undersides too, this is a safe way stop chewing insects.

ok thanks.. will they eat the buds too??

do butterflys/moths eat plants?