Overview: Horace and Doris, two posh Snails, arrive in Gordon’s garden looking for a second home. Lez and Dez take a disliking to them and send them off into Percy’s garden, where they hope they will fall foul of one of Percy’s bug-catching contraptions. But Gordon offers a more ‘friendly’ solution to their housing problem, and builds them a top of the range Double Bin Compost Heap. Lez and Dez are furious and decide to ‘raid’ their house warming party.