Green Mouse Droppings

Did you know that mice can produce 150 droppings per day? That’s a lot of running to the bathroom. Well, maybe you don’t want to hear this or maybe you know it already. Mice poop almost anywhere they are. Running across your dish strainer, in your silverware drawers or running up a wall it just doesn’t seem to matter.

The intestinal tract of a human is about 30 feet on average and while the house mouse’s is proportionally similar their bowel activity is far greater than ours. The metabolism of a mouse is very active and they defecate almost constantly. It never ceases to amaze me just where I find mouse droppings and how many.

powdered mouse thumb Green Mouse DroppingsQuite often we get concerned customers who call and say they’ve found green or red ‘turds’ in their homes. “This has to be some sort of exotic animal or maybe a roach from Madagascar they exclaim, it can’t be the common house mouse”. Convinced they have some rare or abnormal creature they are eager for a pest control professionals help.

Within minutes your friendly pest control technicians narrows down the answer and has the proof in his hands that came from behind your refrigerator or under the sink. It’s a box of D-Con or some other mouse bait and the feed pellets are a nice emerald green. It’s easy to see that a mouse (or two) has been eating there because they have left some fine powdery crumbs behind and perhaps mouse rat poison Green Mouse Droppingsgnawed on the box itself. Usually there isn’t any droppings in the box contrary to their habit of ‘going # 2 anywhere anytime.’ Mice are generally a clean animal as far as personal hygiene they just don’t care much for yours. D-Con bait is usually green in color while the other most widely used color is red. So if you are seeing these colorered droppings you know that those mice have eaten your baits.

It’s difficult to say that red or green droppings mean the mouse has gotten a lethal dose or not from the baits since food passes through their systems so quickly. What you can surmise however is that they have accepted the bait (which is usually not a problem) and if they haven’t got enough already, they’ll be back for more.

killer Green Mouse DroppingsIn most situations we are happy to see the decorated mouse fecal matter because we know that we may be near the end of the infestation. One thing that demoralizes PCO’s everywhere however is where we find these baits. It’s one thing to have your target pest get into your lethal box of rodenticides but it’s a whole different matter when your puppy or other non intended animal finds a box of brightly colored bait in the open and fills his belly.

While green poo is a great sign for a mouse infestation, it’s a horrible thought when man’s best friend produces these brightly colored signs of death.

 Green Mouse Droppings

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About The Bug Doctor

Jerry Schappert is a certified pest control operator and Associate Certified Entomologist with over two and a half decades of experience from birds to termites and everything in between. He started as a route technician and worked his way up to commercial/national accounts representative. Always learning in his craft he is familiar with rural pest services and big city control techniques. Jerry has owned and operated a successful pest control company since 1993 in Ocala,Florida. While his knowledge and practical application has benefitted his community Jerry wanted to impart his wisdom on a broader scale to help many more. Pestcemetery.com was born from that idea in 2007 and has been well received. It is the goal of this site to inform you with his keen insights and safely guide you through your pest control treatment needs.
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  • Scott Clay

    I are not sure your bait theory is the only possibility. I discovered bright green mouse dropping in a pile of lumber on our farm today. The lumber was more than 3/4 of a mile from any house or structure. The quantity of droppings and concentration of droppings reminded me of stores of cherry sends or acorns I have seen rodents garther over the years.

  • Scott Clay

    I are not sure your bait theory is the only possibility. I discovered bright green mouse dropping in a pile of lumber on our farm today. The lumber was more than 3/4 of a mile from any house or structure. The quantity of droppings and concentration of droppings reminded me of stores of cherry sends or acorns I have seen rodents garther over the years.

  • The Bug Doctor

    Awesome observation Scott,
    You’re right there are other things that could make a mouse dropping another color besides mouse bait. Different foods that are green or red could do it or maybe even a problem in the intestines like if it were sick. (diarrhea type illness eecckk) Something else I’ve thought of is why only green and red? I’ve never seen purple or blue yet I’ve seen those colors in candy they’ve eaten. Maybe those colors just don’t digest…. Great, now you got me wondering and I’m gonna have to hunt down the answer, Thanks a lot! lol

    Excellent comment!

    Thanks for reading
    The Bug Doctor

  • The Bug Doctor

    Awesome observation Scott,
    You’re right there are other things that could make a mouse dropping another color besides mouse bait. Different foods that are green or red could do it or maybe even a problem in the intestines like if it were sick. (diarrhea type illness eecckk) Something else I’ve thought of is why only green and red? I’ve never seen purple or blue yet I’ve seen those colors in candy they’ve eaten. Maybe those colors just don’t digest…. Great, now you got me wondering and I’m gonna have to hunt down the answer, Thanks a lot! lol

    Excellent comment!

    Thanks for reading
    The Bug Doctor

  • C

    Droppings can be green if your undercarpet lining is green-ish. Mine for instance has many colors, bu the main surface coloro is bright green. The mice ate small portions of the the undercarpet and the droppings were bright green. Now I put the green Vector bait near there and two snap traps. Wish me luck !!

  • C

    Droppings can be green if your undercarpet lining is green-ish. Mine for instance has many colors, bu the main surface coloro is bright green. The mice ate small portions of the the undercarpet and the droppings were bright green. Now I put the green Vector bait near there and two snap traps. Wish me luck !!

  • The Bug Doctor

    Excellent observation C! It doesn’t have to be bait to turn their poo colors. I have a pic and a article coming soon about a mouse who ate ‘pink soap’… no pink droppings were found anywhere but tiny unexplainable bubbles were strewn about :)

    I don’t think you’ll need much luck cause it sounds like you have your prey figured out. Thanks for a great comment and be sure to sign up for my newsletter for occasional information updates you might find handy.

    The Bug Doctor

  • The Bug Doctor

    Excellent observation C! It doesn’t have to be bait to turn their poo colors. I have a pic and a article coming soon about a mouse who ate ‘pink soap’… no pink droppings were found anywhere but tiny unexplainable bubbles were strewn about :)

    I don’t think you’ll need much luck cause it sounds like you have your prey figured out. Thanks for a great comment and be sure to sign up for my newsletter for occasional information updates you might find handy.

    The Bug Doctor

  • Traviscota

    What makes little acorn shaped droppings in my wifes clothes closet, now mine?same color as an acorn also…are they eggs or droppings..they are hard and about 3/16 long with a pointy end ( we are in Michigan)

  • http://pestcemetery.com The Bug Doctor

    Hi Traviscota,

    Is there anyway you can send a pic? You can use the upload button on my Ask The Bug Doctor page. ( tab at the top of the site) Mice droppings are sort of ‘tear drop’ shaped but the ‘acorn’ description has me a bit puzzled.

  • Mel

    A constipated rodent?

  • mama in need!!

    Why is the mice in my house leaving red droppings??? I have a baby and I want to know will it harm him? I am looking for someone to get ride of it or them!!

  • http://pestcemetery.com The Bug Doctor

    If you haven’t used any red mouse baits then I’d say the mice got into a food or item in the home that has red in it. I’ve seen mice eat crayons, sweaters or clothing (red) that have produced the color but most often it is because of red mouse/rat bait or some red dye in foods we eat. The dropping are not sanitary at all so avoid contact with them and the baby.

  • lin

    I found bright, forest green droppings clung to a towel that was hanging in my closet. Do I have a rat infestation?

    I collected the droppings in a partially empty water bottle. A picture is attached.

    Thank you! 

  • http://pestcemetery.com The Bug Doctor

    Difficult to see but it doesn’t look like a classic rodent dropping to me. Try resending the pic on my Ask The Bug Doctor page. (and another if you have more)  I may be able to see it better.  http://pestcemetery.com/bug-doctor/

  • America

    My dad recently put down some of that d-con stuff in my basement after we found a few droppings but now I’m finding the green droppings in my kitchen and I have a puppy. What should I do?

  • http://pestcemetery.com The Bug Doctor

    Hopefully the bait is not where the pup can get to it–that’s your biggest worry. Since most puppies (I imagine) won’t eat a dead mouse I would not be overly concerned of secondary poisoning but I would be very vigilant looking for any dead mice and getting rid of them….