How to Make Homemade Insecticidal Soap for Plants | Today ...
Bar Soap: For a less-exact recipe, drop a bar of pure soap (such as organic bar soap or Ivory) into a gallon of water and leave it overnight. Remove the bar and shake well before spraying. Reply. Charlie Reid June 9, 2014 at 7:55 pm. If you can use Ivory bar soap, can you use the Ivory soap flakes?