more absurdity witnessed: scattered white substance

crazy chinese lady next door is back to her old tricks. this time, there is this rank unknown white crystalized substance scattered mid lawn to mid sidewalk. a long haired black chat was seen investigating and nibbling at the stuff. it seems like a cross between detergent and moth balls, some kind of radioactive salt. possibly poisonous? is she warding off bad omens or just sick of Tide? you be the judge.