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Mouse Control

Peder Hoyum

Identification

Mice are small furry mammals ranging in size from 7.5 to 10 centimeters, with a long tail that is usually 5–10 centimeters. They typically weigh 10–25 grams. Their fur can vary in color from white to gray and from brown to black.

House Mouse

Field Mouse

Almost Dead Mouse

Long after humans have done their time on this planet and we are left as just another layer in the geologic strata, there will still be a few creatures left crawling around. The common house mouse (Mus musculus) will likely be one of them. It is one of the most persistent pests from the especially troubling order of creatures called rodents. In the wild they do their duty: foraging in the undergrowth unheard and unseen, quietly squeaking out a simple existence, always mindful of the ever-present threat of predation, always on the look out for an odd bit of cheese. It is not until they encountered our species tens of thousands of years ago that they became a problem: destroying crops and spoiling our best laid food-storage plans. They followed us as we moved around the globe and often sharing our penchant for destroying existing ecosystems. Mice can also carry many diseases including such favorites as: rabies, rickettsia, typhus, salmonella, and last but not least, bubonic plague, so don't handle them if you can help it.

Controlling Mice

Clean your house. Pretty basic. If you don't want to see little furry flashes dart across your kitchen when you turn on the lights, then don't give them a reason to be there. Mice need to eat. If you have mice in your house, it's because there is a food source attracting them. It might not be obvious. You might sweep and mop your kitchen regularly, but when is the last time you moved your oven? Have you looked under your microwave? Do you have pets? How clean is their feeding area? Do you have kids? Do they bring food into their rooms? Eat popcorn on the couch? The possibilities are endless.

Store your food in mouse-proof containers. So, you've cleaned up your act, washed under the stove, and curtailed all crumbs—but there are still mice coming into your house. You need to start going through your pantry and look for permeable containers, like cereal boxes, bags of rice, oatmeal tubes, etc. I guarantee they have chewed their way into some of your dry-storage staples. Also check things like pet food bags, as they love to chew their way into those things too. Transfer your dry goods into mouse-proof tin containers. Even the dry goods stored in closed kitchen cabinets, which seem like they might be safe, are susceptible to a hungry mouse.

Mouse-proof your house. It's pretty difficult to keep a persistent mouse out of your house. They can squeeze through tiny little spaces. They can also chew through wood and expand existing holes. But there are things we can do to make it a little harder for them. Assuming your foundation is concrete, you need to look for gaps around basement windows, doors, cellar doors, and egresses. Seal these gaps and any cracks with caulking and then line them with flashing or hardware cloth if necessary. Sealing up cracks is a good idea anyway for the sake of energy efficiency, but it also helps in the battle against mice.

Set mousetraps. I know they are scary, or rather, they used to be. New spring mousetraps (please don't use those awful sticky traps) are as user-friendly as any killing device can be. I still prefer the old fashioned ones because they are dirt cheap. But they all work just fine and they are a necessary component of any mouse-control scenario. Generally speaking, mousetraps kill a mouse very quickly and humanely. I have seen a few exceptions that involved a screaming paraplegic mouse dragging a trap, along with its lower half, across a floor. But that's pretty rare. Set these traps in areas where you have noticed mouse traffic and use a nice sticky bait like peanut butter.

Don't get complacent. Here is some food for thought: a female mouse becomes sexually mature at two months old and she can have 8–10 litters per year. In each litter a mouse can have as many as fourteen babies. Do some basic math and you can see how a small mouse problem can become an infestation. Not all of these mice would survive, of course, and the whole thing is dependent on a constant food source. Hopefully, this is something that you, having cleaned your house and sealed up all of your storage containers, have made rather difficult for the poor little mouse. If you're lucky she'll move on to greener pastures, or better yet, walk into one of your traps.

Why not poisons?

You can certainly use poisons if you want, but be forewarned that the unassuming victim usually decides to die in the most inconvenient place possible, thus leaving you with the pervasive stench of rotting death for a period of time dependent upon the amount of moisture in said place and the number of victims. If you're okay with that risk, well, I question your sanity. Not to mention the risk to other animals that are likely to occupy the same space as the mouse poison, namely your pets, or wild predators who might eat the poisoned mouse. I don't know about you, but my dogs pick up every dead thing they come across and chew on it until they either become bored with it or swallow it. How would you like that on your conscience? Thanks, but no thanks.

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