| 2026-04-27 | Strong soapmaking solutions |
| 2026-02-01 | Caustic solutions |
| 2025-06-30 | Soapmaking supplies |
| 2025-02-22 | Solutions that sound like problems? |
| 2024-05-08 | Some harsh cleaners |
| 2023-07-09 | Caustic substances |
| 2022-09-11 | Strong cleaners |
| 2021-06-20 | Some strong solutions |
| 2020-05-14 | Harmful substances to swallow |
| 2020-03-22 | Caustic cleaners |
| 2019-11-14 | Caustic compounds |
| 2019-04-30 | Caustic solutions |
| 2018-05-22 | Drain decloggers |
| 2018-01-08 | Strong cleansers |
| 2017-12-14 | Very basic things |
| 2017-04-01 | They burn |
| 2013-11-18 | Cleaning solutions |
| 2012-10-12 | Basic solutions |
| 2012-08-28 | Cleaning agents |
| 2012-08-20 | Caustic alkalis |
| 2012-04-16 | Caustic cleaners |
| 2012-02-03 | Burning solutions |
| 2011-12-20 | Caustic cleansers |
| 2011-07-03 | Caustic cleaners |
| 2011-05-22 | High-pH solutions |
| 2010-12-19 | Basic solutions |
| 2010-11-20 | They burn |
| 2010-08-29 | Corrosive cleaning agents |
| 2010-07-12 | Corrosive alkalis |
| 2009-02-09 | Caustic compounds |
| 2008-09-15 | Caustic solutions |
| 2007-12-08 | Products of wood ashes |
| 2007-04-29 | Caustic chemicals |
| 2005-06-20 | Soapmaking substances |
| 2001-11-04 | Strong cleaners |
| 2001-03-27 | Caustic alkalis |
| 2000-03-28 | Alkaline solutions |
| 1999-12-30 | NaOH solutions |
| 1999-12-20 | Cleaning cabinet supplies |
| 1999-09-23 | Strong cleaners |
| 1999-08-01 | Cleaning cabinet supplies |
| 1999-05-14 | Percolation products |
| 1999-02-08 | Caustic materials |
| 1998-07-16 | Potassium and sodium hydroxides |
| 1997-06-23 | Caustic solutions |
| 1996-07-25 | Soapmaker's supplies |
| 1994-04-01 | Cleaning solutions |
| 1994-02-23 | Cleaning agents |