夏天的时候，我们会在窗台上放驱虫剂来防止蚊子飞进来。

In summer, we place ___repellents on the windowsill to keep mosquitoes from coming in.

这种桌布经过特殊处理，添加了防水防污的防护层。

This tablecloth is treated with special ___repellents to resist spills and stains.