21. Washing the walls with a solution of warm water and baking soda helps, too. 22. When the tests still showed contamination, the walls were washed and tested again. 23. Wash walls from bottom to top, working upwards. |
21. Washing the walls with a solution of warm water and baking soda helps, too. 22. When the tests still showed contamination, the walls were washed and tested again. 23. Wash walls from bottom to top, working upwards. |