Ubiquitous wife has the lot: two cooks — everything (4-2-4)
I believe the answer is:
wall-to-wall
'ubiquitous' is the definition.
(I've seen this before)
'wife has the lot two cooks everything' is the wordplay.
'wife' becomes 'w'.
'has' says to put letters next to each other.
'the lot' becomes 'all' (I've seen this before).
'cooks' indicates anagramming the letters.
'everything' becomes 'all' (all things).
'two' with letters rearranged gives 'tow'.
'w'+'all'+'tow'+'all'='WALL-TO-WALL'
(Other definitions for wall-to-wall that I've seen before include "(Of carpet) fitted" , "Widespread" .)