I added liquid enzymatic drain "declogger" (brand: Earthworm) to a clogged toilet drain that I already tried plunging.

How are the enzymes supposed to reach the clog, unless the clog is in the first half of the P-trap? If the clog is already beyond that, it seems like the enzymes will just be working in the area of the drain already cleared.

  • Well if the specific gravity of the chemical will allow the chemical to reach the "plug" and start to dissolve it I would suggest that that was the best way to go. I am an electrician with only high school chemistry but that would make sense to me.
    – Ed Beal
    May 19, 2018 at 7:19
  • Whether or not it reaches the clog, the Earthworm manufacturer still makes money. :-) I've never found chemical or enzyme products to be very useful. If you're sure the clog is just stuff that belongs there (i.e., not children's toys or feminine products), it can usually be cleared with hot water and soap. If the water goes down even really slowly, let it drain out. Squirt a little liquid soap in the bowl, a little bleach for odor control, and pour in a large pot of hot (almost boiling) water. Wait for that to drain out and repeat as needed. (cont'd)
    – fixer1234
    May 19, 2018 at 8:19
  • Clogs usually clear by about the 3rd pot of water. If the clog doesn't clear by the 4th or 5th pot, you'll need to break out a plunger or snake, but that's rare.
    – fixer1234
    May 19, 2018 at 8:19
  • I use sulphuric-acid based drain cleaner, it usually does its work on first litre of product... I tryed "bio" products/boiling water and didn't solved in hours what my good old acid cleans in one 20-minutes strike. The only thing to check is not to have any lead drain plumbing. (Lead would oxidize and release huge amounts of explosive hydrogen sulphide). PS: it reaches the clog only if there arn't P-pipes, if you have siphons the manifacturer suggest to use rubber hose to pass it then pour it by the hose (or huge amounts are needed)
    – DDS
    May 19, 2018 at 10:27
  • I don’t care for acidic drain cleaner because they tend to permanently damage chrome drain pieces, acidic is usually not meant for toilets where the maker admits on the bottle the heat from the reaction can cause other toilet problems, including cracking. Enzymatic drain cleaners do work but not on already plugged drains, enzymes when used as directed are great for preventive maintenance. When a drain is plugged the best solution is a snake. If tree roots are a regular problem flushing copper sulphate works well, but again as a preventative treatment, not after plug.
    – Tyson
    May 19, 2018 at 12:02


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.