I have a query regarding bio washing-up liquid.
We've recently experienced slow flow in our kitchen drain pipes, and the plumber whom we asked to have a look at them showed us there was some non-descriptive gunk build-up in the pipes.
We rarely cook with fat (we're vegetarians, and maybe fry a dozen times a year). Plus, we always wipe our pans, pots, and dishes with kitchen paper before doing the dishes in the sink.
We've used bio washing-up liquid for a long time now. The plumber told us that bio washing-up liquids can cause build-up problems in the pipes.
That sounded weird, so we had a quick search on Google, which revealed no information on such issues with bio washing-up liquids.
Would someone be so kind as to let us know whether this is a known issue with bio washing-up liquids?