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Kill two of them and place the carcasses on either side of the door to warn the other ants*
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Just ants as it should. You okay.
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You can spray all invincible.
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Give it some rain and it moves.
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With wide large tape, stick and throw away.
It's just a small thing, you shouldn't be alone, if you don't have family and friends around you, you should rest assured that there will be nurses in the hospital.
If it's not serious, buy the solution for the toilet on the Internet, all kinds of brands, and pour it down the toilet. If it doesn't work, you can only call to find the pipe, the plumbing maintenance master, generally using small mechanical dredging equipment. About 200 yuan.
Small advertisements are overwhelming, you can see them everywhere, and you can just make a phone call.
Call a friend and ask them to deliver.