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If the wire is not long enough, you can extend it from one end to the other with a wire of the same thickness (do not draw wires from the middle, as this will add two more connectors).
It can be replaced with a diamond net anti-theft screen, which has three protective functions: anti-theft, anti-mosquito and child safety. The mesh is made of 304 stainless steel wire, and it is recommended to take a look at it when purchasing, and choose products from large manufacturers with quality assurance.
In short, the house can not be opened indiscriminately, since there is a landscape yard, there should be a door, especially the entrance door can not be changed indiscriminately, which is not good for your own home,
There should be a public flue in your building, and the fumes from other people's homes have reached your house, check whether the kitchen flue is sealed intact.
This kind of problem is ignored, it may be that you are more sensitive, and the spitting is not necessarily aimed at yourself.
You live on the third floor, and there are a few rats in the toilet compartment, both of which have been around for 2 years, so I'm afraid there are already a lot. More rat poison should be put in.