Key Takeaways. Small mouse 
There are a lot of factors that influence the time it takes. Mice exterminators generally lay poison bait stations that can take 1 to 3 months to get rid of mice completely.
As the word implies, exterminators exterminate mice, rodents, and other pests... A team comes in, searches for the signs of mice and rats, spreads their chemical poisons, traps or baits, and come back in time to gather the dead carcasses.
Our research shows that hiring a professional mouse exterminator is worth the cost for multiple reasons. Mice can cause significant damage to your home by chewing through wires, insulation, and even wood, leading to costly repairs. They also pose serious health risks, as their droppings and urine can spread diseases.
Most people catch about five or six mice before calling a mouse exterminator. Moreover, setting ten traps inside a home for mice is enough for most homes. While there are extremes for any pest infestations, most homes will have ten or less mice inside.
Will Mice Leave If No Food? It all depends, while mice do not just go away on their own, reducing the amount of readily available food that they have access to can help in deterring them from infesting your property.
Chances are that if you see one mouse in an active part of your home during the day, that you only have one mouse in your house at that given moment. This is because the mouse may have been trying to escape a predator and found an escape route through your home.
To discourage mice, remove all food sources by storing grains, pet food, and other dry goods in metal containers. Make sure mice won't find nesting material by storing all soft, fluffy material like fabric, rugs and blankets in heavy plastic or metal boxes.
Mouse nests are typically small and compacted blobs of soft materials. Most nests look like messy clumps of shredded paper, insulation, and fabrics that they could have gathered on their own, like dust bunnies in a corner. These nests range in size but are often smaller than a baseball.
Zinc phosphide is an acute toxicant that causes the death of a house mouse within several hours after a lethal dose is ingested. It appears to be the fastest way of getting rid of mice by reducing their population.
No More Mice Droppings
 If you've cleaned up droppings but continue to find fresh ones, it means the mice are still around. On the other hand, if you stop noticing signs like fresh mouse droppings for a while, it's a good sign the mice might be gone.
Your rodent exterminator will seal openings greater than ¼-inch using screen, flashing, door sweeps, heavy-duty sealants, and other exclusion materials. Keeping mice out of the structure is not always a simple project; however, the exclusion is the single, best long-term way to deal with mice problems.
Costs for removal of mice will vary depending on where you live, the severity of the infestation and other factors. It depends on how severe the infestation is, but it usually takes between 1-3 months for exterminators in order to eradicate mice.
Tiny bits of peanut butter or soft cheese have always worked well. Stick a pinch or two of marshmallows, gum drops or beef jerky to the trigger and the trap will spring when mice take a bite. When female mice gather nesting materials in fall and winter, dental floss, yarn and twine attract them to the trap.
The exterminators will identify their entry points and then block them to stop the entry of new vermins in the house. They preferably go for mouse traps that use a piece of food as bait. And eventually kills the mouse with a snap, and their heads are gone.
Mice have a very sensitive sense of smell, and if they sense the smell of a predator, they are much more likely to avoid the area. However, mice do not seem to be afraid of dog smells or their fur.
Sounds That Repel Mice
 High-pitched noises may affect rodents, but research has shown the effects are often overcome within a day or so because the rodents adapt to the sounds, regardless of whether the frequency is variable, intermittent, or random.
Will sleeping with lights on keep mice away? No, sleeping with lights on is ineffective for keeping mice away. Mice are nocturnal creatures and are less likely to be deterred by light.
Mice Might Learn to Avoid the Trap in the Area
 Although traps are new to them at first, they'll eventually know what it does and find different ways to get the bait while avoiding it. One of the ways that mice do this is to run along walls.
Hiring a mouse exterminator costs, on average, $450 to $600, with the average homeowner spending around $525 for a mouse extermination service that includes a consultation, traps, sealant, and follow-up.
It's tempting to just ignore the minimal signs you've noticed so far. It's not so far from spring, after all, and you may have heard that mice will leave on their own once it warms up. The truth is, they won't. Mice are an extremely dangerous pest, and getting rid of them should be an absolute priority.