Abstract: A wiper-scraper comprising a can having an inner wall, an upper axial lip, and a lower axial lip is described. The upper and lower axial lips are disposed at opposite ends of the inner wall and define a first central opening and a groove. A wiper is disposed in the groove adjacent the lower axial lip. A scraper is disposed in the groove between the wiper and the upper axial lip and floats within the groove. The scraper defines a scraper channel facing toward the inner wall and an energizing spring is disposed in the scraper channel. The energizing spring has a serpentine shape and applies a biasing force between the inner wall and the scraper.

Abstract: This invention relates to nucleic acids encoding chimeric polypeptides comprising vacuole targeting sequences and plant-noxious sequences and especially pest control proteins. The polypeptides are useful in methods for targeting non-vacuolar harmful proteins to plant vacuoles. Chimeric polypeptides of the invention containing pest control proteins are useful for conferring pest resistance on plants and in the production of compositions useful as pesticides.