Removing Moss and Algae from a Pail, Damp Wood, Rocks, etc.
Does One Have to Be Careful with Each Step to Check if They Are Stepping on an Insect?;
Understanding the Difference Between ממצא חפציך (Mimtzo Cheftzecha), דבר דבר (Dabair Davar), and הכנה (Hachana);