The kitchen countertop is cut into two sections, and the interface looks good

It depends on each person's preference. Generally, high-rise balconies can be sealed with plastic steel windows. >>>More

If you want to save money and trouble, put sealant in the yin corner, choose the right color, make it into an arc, and use it when it is dry. If you can't operate it yourself, you can ask the window master to help. Otherwise, change the countertop with arcs.

Generally, if it is not serious, just rub it with a dry rag dipped in toothpaste, and if it is serious, use a very fine sand paper to sand it, and then polish it with toothpaste.

It's aging.

It is an irreversible chemical change. >>>More

I don't know if cockroaches eat green leaves, but I do know that rats eat them, and some of the green plants that I used to plant by the windowsill in my office were gnawed by mice. In short, you have to do something to prevent rodents and eliminate rodents, otherwise more things in your kitchen will suffer, especially if they are very unhygienic and have health risks.