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狗狗驱虫的误区有哪些呢

狗狗驱虫的误区有哪些

驱虫药的使用和应该注意的问题, 一般认为,幼犬从2到3周开始,就应该驱虫,以后每2周到4周应该驱虫1次,直到半岁。成犬则应每个季度驱虫1次。从内驱或是外用药的有效成分和起作用的过程,我们就可以看到,药物在杀虫的同时,也给爱宠带来了不可避免的伤害。

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