Spermicidal creams and jellies are less effective than foam because they sometimes disperse unevenly. 因为杀精子乳膏和凝胶剂有时在阴道内分布不均，其效果不如阴道泡沫剂。
Another questionable method consists of inserting a small sponge together with some spermicidal powder or liquid into the vagina. 另有一种可疑的方法，将蘸有杀精子粉末或剂的小片海绵插入阴道。
