public static void cleanAll() {
		for (Shit s: shitList) {
			s.remove();
		}
		for (Vomit v: vomitList) {
			v.remove();
		}
		for (ObjEX oex: Food.objEXList) {
			if (((Food)oex).isEmpty())
				oex.remove();
		}
		for (Body b: bodyList) {
			if (b.isDead())
				b.remove();
		}
		for (ObjEX oex: Stalk.objEXList) {
			Stalk st = (Stalk)oex;
			if (st.getPlantYukkuri() == null){
				st.remove();
			}
		}
	}