Kitchen sink backing up? It's almost always fat and food waste.
Kitchen sinks block for a very consistent reason: fat, oil and food waste cool and harden inside the pipe, narrowing it a little more every time you wash up, until eventually nothing gets through. Shop-bought drain unblockers rarely shift it properly and can make a proper clear harder.
We clear the blockage mechanically rather than relying on chemicals, so the pipe is genuinely open again rather than just temporarily softened.
Kitchen sink blockages look different depending on where you are in Manchester — older terraces in Chorlton tend to have narrower pipework than the newer apartment blocks going up in Salford, and the cause of the blockage usually reflects that. We clear the line based on what's actually there.
We'd generally say don't — it rarely clears a proper fat blockage fully, and it makes the job messier and slower for whoever clears it after, including us.
It can, if fat keeps going down the drain. Scraping pans into the bin rather than the sink is the single biggest thing that prevents it recurring.