What insect do these eggs belong to?
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They look like a Mud Dauber was busy there. A Mud Dauber is a type of wasp that builds this kind of muddy mess to lay their eggs in. As they build up chambers of mud, before sealing them closed, they lay an egg inside, AND they also sting and paralyze an insect to close off in the chamber too, so when the egg hatches, it has a ready food supply. Once the egg and paralyzed insect are tucked safely away in the chamber, it is sealed off with more mud. The Mud Dauber will make blocks or tubes of these chambers all tucked in close together. You can tell the egg hatched and grew into an adult, by looking for an exit hole in the mud. Some birds take advantage of the Mud Dauber's hard work by pecking open the chambers and eating what they find inside.
I believe these may be Mud Daubers (a type of wasps) but they do not generally sting humans unless they are cornered and even so the sting is usually mild (or so I've read).
if these look like what you have:
Instructions on how to get rid of these is pretty simple:
1.) Spray the nest with wasp freeze/killer spray. This will ensure that if there are any wasps in there, they will die and not attack you when you try to remove their nest.
2.) Scrape the nest off the area with a paint scraper.
3.) Spray the area with water to clean up residue."
This is an excellent article but you have to read all of it to really understand.
dengarden.com/
If you feel this is not your insect then you can always ask your county extension service.
Wasps are known to lay eggs in window jambs or tracks - the one type I could find pictures for on the internet uses bits of grass though. However, the substance around your egg casings appear to be dirt or (I hope not!) or wood "frass" produced by termites. If you live in the U.S., you can find a County Agriculture Extension Agent to help you at www.gardeningknowhow.com/
Not sure if this picture is vertical or horizonal. If it is these things laying flat--they look like lizard poop and not eggs. If it is vertical then the home extension or a local agriculture school should be able to help.
Post back what you learn.
I would send the picture to the Cooperative Extension near me for a positive identification. They specialize in your particular area.
These are nests of Mud-Dauber Wasps (Slender Mud-nest Builders). These wasps are solitary and build nests out of mud.
That is a mud dauber. We get them in the barn here at the farm.
These look most like Mason Bees larva. See pictures in the link below.
I think they are some kind of masonry bee.
nurturing-nature.co.uk/
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