Environmental health officers in Bristol come under scrutiny in a fifth, eight-part run. A rat has been found in a car engine, and there's a nasty smell coming from a flat.
Bristol City Council workers face the task of clearing years-worth of muck from a local boating lake.
Ian Thomas faces a rat-infested Bristol alleyway, while dog wardens track a stray that's running wild on a golf course.
Stuart Royall has the unenviable task of disinfecting a property following the removal of a four-week-old corpse.
Drain man Paul Vice is faced with a nightmare mob as he struggles to find a lost manhole under an acre of rubble.
An arson attack on a council house three weeks before Christmas gives housing surveyor Carl Turville a problem.
Pest officer Ian Thomas pursues a rat that has made itself at home in a Bristol garden, but an exorcist could be the only answer to an unwanted visitor in a council home.
In preparation for the Britain's Cleanest City competition, Bristol's pest control officers lay poison along the ancient underground waterways in an attempt to rid the city of rats.
