Why It Happens
Why Kitchen Drains Clog
Grease is the architect. Poured warm, it coats the pipe as it cools, and Guinea's flat kitchen branches give it still water and time. Layer builds on layer until the bore is a greased tunnel that catches everything else the sink sends down.
Food solids are the bricks: rice that swells, potato peelings that mat, coffee grounds that bind, and — in this community — the grit and shell fragments from cleaning crabs and fish at the sink, which settle like sediment and harden a soft clog into a firm one.
The disposal contributes its own misunderstanding. It grinds food finer; it does not make food weightless, and a disposal-fed line actually receives more solids than a scraped-sink line. Cold water in quantity is what carries the grind away — run short, it deposits in the first flat feet of pipe.
Dishwasher discharge adds detergent chemistry and heat that re-melt grease upstairs and deposit it downstairs, which is why kitchen clogs so often sit a few feet beyond the trap rather than in it.
And slope rules all of it: a branch with generous fall forgives a household for years, while the flat runs in older Guinea cottages forgive nothing — the same habits clog one kitchen and never touch another, and the pipe, not the cook, is usually the difference.
The single habit that out-earns every other in this room: grease cools in a can on the counter, never in the sink. Flat Guinea branches forgive almost nothing else so little.