It is not this bad where I live, but it is bad. Fortunately I have a good stock of rat and mouse poison, because the stores have none. They have not had any for over a month. The best way to kill the mice is the bucket method shown in this video, or the kitchen tidy method. The latter is where a dob of peanut butter is put on the swing lid, the mice climb onto the lid and tip inside. The inside is half full of water. Each tidy will hold 200 – 300 drowned mice by the morning.
The mice plague is truly horrible. The only thing comparable is the plague of politicians. Both foul and destroy wherever they go. The politicians do more damage, but the mice smell worse.