Try to eradicate the smears from the material (8)
I believe the answer is:
gossamer
'the material' is the definition.
(gossamer is a kind of material)
'try to eradicate the smears' is the wordplay.
I cannot quite see how this works, but
'try' could be 'go' (both can mean an attempt) and 'go' is found in the answer.
an anagram of 'smears' is 'ssamer' which is within the answer.
No letters remain.
This explanation may well be incorrect...
'from' acts as a link.
Can you help me to learn more?
(Other definitions for gossamer that I've seen before include "Flimsy, delicate material" , "Some rags (anag.)" , "Filmy cobweb - very fine fabric" , "Spider-woven threads seen on hedges" , "Threads from spiders" .)