Kitchen lines clog with cooking grease above all — poured off as liquid, cooled into a waxy lining that narrows the pipe a fraction at a time and grabs everything that follows. Add coffee grounds, fibrous vegetables shredded by the disposal, and the occasional rice or pasta load swelling in the trap, and the classic kitchen plug assembles itself. Bathroom drains run on hair and soap: hair felts, soap scum binds it, and toothpaste and shaving gel cement the mat in the trap arm where a plunger cannot reach.
Older corridor pipes add scale to the recipe. Cast-iron and galvanised drain arms in Sterling Park’s and Sugarland Run’s earlier homes corrode rough inside, giving grease and hair something to grip, so their drains clog faster than identical habits would clog smooth PVC in an Arcola build. Knowing which pipe your drain is made of changes how we clean it and how long the result should last — one of several reasons a professional cleaning beats the rental auger.