how do we know how old lice eggs are?
85951
DNA testing won't tell you their age.\n\nHowever, you can be sure that the eggs (called "nits") are less than 1 to 2 weeks old, because they hatch in that period of time.
751030
As an egg gets older, it produces hydrogen sulfide, a gas. The gas moves to one end of the egg. To see how old an egg is, place it in a pan of water. If it floats, don't use it. If it stays on the bottom but points up, it is getting old, but I still use them. If it stays on the bottom, flat, it is fresh.\n\nYou can tell if an egg is hard-boiled by spinning it. If it spins easily and fast, it is hard boiled!\n\nHope this helps!
564665
From everything I have read regarding Lice ( had to deal with a bout of it on my 9 yr old when she got it from school. Lucky for my husband and I neither of us got it and we treated ourselves just to be safe too. ) Anyway, from what I have read about Lice; Animal Lice is different from Human Lice, Animal Lice lives off the Dander and old skin on animals where as Human lice lives off Blood ( thus the reason why the ITCH; it's because they bite you to draw blood.) Animal Lice can NOT live on Humans for just that reason and Human Lice can't live on Animals because there's a different genetic make up.\n\nHowever if you do feel afraid you might get it I would suggest getting something like Rid or Pronto that also has the canester spray to use on beds, cars, furniture etc. Stuff that can't be washed in HOT, HOT Water safely ( even Toy's which you can actually Spray down,put into a giant trash bag and keep in there for several weeks to make certain any eggs that might have latched on will have died.)
180148
4.3 years older than it looks now.\n\n300 million years.\n\nJust a baby!
538853
Tube worms can live 200+ years
164705
You can 'guess-timate' a turtle's age by counting the rings on the scales (scutes) on the belly (plastron). Note that this does not work on very young animals (no rings yet), very old animals (too many rings crowded too closely to count well), turtles that have very smooth plastrons (Snappers, softshells), or turtles whose plastrons are very worn.\n\nThis works because they add one ring every time they shed a scute- usually one per growing season. Even the tropical species only tend to have one rowing aseason per year.  \n\nThe technique is to count the rings on at least four different scutes. Whichever number you come up with the most often is the approximate age.\n\nIt is only an APPROXIMATE age because they can easily skip a year or two (especially when fully grown), or shed a few times a year (especially when young and growing fast). In a bad year, the rings might be hard to see, or a 'false ring' may develop because of a disease, etc.\n\nSome researchers have created a chart that works for some species, sorta. For example I have seen one for some species of Box turle that treats the first five rings as two years, then rings after 10 as two years each- all of which assumes that the rings are reasonably regular and a certain space exists between them, etc.\n\nSome species develop strong rings in the scutes of the back (carapace). These rarely match up with the plastron count.\n\nNow, except for natural curiosity, there is not much reason to know the actual age of a turtle. With most species, you determine adulthood more by size than a guesstimated age. \n\nThere is also a tendency to think that most turtles are really old- but the average lifespan of many turtles is well under 20 years. The really old turtles are generally tortoises and almost always live in very protected places. The last documented longevity record for a Painted turtle that I have seen, for example, is only 22 years- and it was born and raised in a zoo.
967074
Egg / ovum -- 48 hrs\nSPerms -- 48-72 hrs
997749
The eggs hatch in about 60 days
296399
not very old....i know a person who got them when she was four until she was six and then from 11 to 13
449832
yup head lice   the eggs are like sticky clear stuff wont brush off it takes two fingers to pull of hair black is lice feces  it common  all walks of life get it yes even the rich and famous they crawl they dont fly  be sure to wash sheets  pillows  and vacum carpet   be sure and treat again in 10 days with meds like rid or nix  or just shave head if your a guy easiest way if your a guy  other wise will take hours to go thourgh your head
581547
It's highly unlikely that it'd kill them. Lice are amazingly hardy and will survive pretty much anything.\n\n\nYou should definitely just go to a pharmacy and ask for a shampoo to treat lice.
341165
You don't have to throw away sheets and underwear. Just make sure you wash them in VERY hot water. (best to soak them in boiling water). ***The lice won't live long without a host.***\n\nThe easiest way to get rid of p-ubic lice is to shave all the hair off. It's cheap and effective.\n\nIf you opt NOT to shave (e.g. you opt to use the crab lice shampoo)- make sure you take the following precautions so as not to reinfect yourself:\n\nMake sure you strip your sheets (boil them -- if that's too much trouble - then throw them away and buy news ones). \n\nMake sure you clean your mattress with a vaccum cleaner! This will suck any lice or eggs up from the mattress.\n\nMake sure you wash your underwear in VERY hot water (or boil them). Hang them in the sun to dry. \n\nGood luck.
972303
The following is from headlice.org. Who would have guessed that there would be a head lice website!!\n\n\n"The extent to which head lice are transmitted to others via headphones or helmets is unknown.  Ideally, risk of transmission can be eliminated by making sure children have and use their own equipment.  If this is not possible, you can clean the items between children by wiping them with a damp paper towel.  An additional measure would be to encourage each child to wear a baseball cap to help shield the hair from contact with the item.  Helmets and headphone should never be sprayed.\n\nMost importantly – and best for the entire community – all parents should screen their children regularly."
653234
Head lice do not "jump" or "leap" from one person to another.  They aren't made that way.  The crawl.  That's all they can do.  And, yeah, lay lots and lots of eggs.  But, as to where they come from, God created them.  For what purpose...only He knows.  \n\nHere's some info for ya...\n\nNits are small yellowish-white (sometimes they look silver) oval shaped eggs that are "glued" to the hair shaft at an angle.  \nYou can't "catch" nits from another person.\nIt takes 7-10 days for a nit to hatch, and another 7-10 days for the female to mature and begin laying eggs.\nHead lice are clear in color when hatched, then quickly develop a reddish brown color after feeding, and yes they are visible right after hatching.  \nThey are about the size of sesame seeds.  \nHead lice are crawling insects.  They cannot hop, jump or fly.  \nHead lice do not thrive on pets.\nHead lice are parasites.  They need human blood to survive.\nThey live for approximately 30 days on a host and female louse may lay up to 100 nits.  \nHead lice off of their human host will starve.  In most cases, a head louse will not survive for more than 24 hours off of its human host.  \n\nThere are a lot of remedies out there for head lice from the utterly stupid to the "that just might work."  The only real thing that can get rid of them is dilligence.  YOU MUST TREAT AND THEN RETREAT IN 7-10 DAYS!  KEEP CHECKING THE HAIR CONSTANTLY FOR MORE NITS OR LIVE LICE.  LICE COMBS ARE THE GREATEST INVENTION SINCE LIGHT BREAD.  \n\nHere's a home remedy that actually worked for us.  It was cheap and effective.  \n\nSaturate the hair with conditioner (any kind will do) making sure you rub it into the scalp and on the hot spots (behind the ears and the back of the neck).  Leave on for 30-60 minutes then comb out with a LICE COMB.  Regular combs will comb out the dead ones, but it won't get the nits.  You can buy a lice comb set for about $8 at Wal Mart.  Rinse thoroughly with warm (not hot, not cold) water, combing while doing this as well.  \n\nYou also have to treat your furniture and carpets and bedding.  Wash all bedding and clothing in hot water with BLEACH!!  Use bedding spray (also available at Wal Mart) to treat the things you can't put in the washing machine.  Also make sure you spray your carpets, vaccuum then throw out your vaccuum cleaner bag.  \n\nHope this helps.
446795
dont cut it too short. instead get a good anti-lice shampoo! yes they are avilable in the market and are not that expensive.
996154
Unfortunately, they are persistent and very hard to kill.  You will have to treat everyone in the house, including yourself, and every room in the house and your automobiles.  You have to wash her hair with the lice killing shampoo (don't use more than one a week or you can damage her scalp).  Very slowly and deliberately comb through her entire head of hair to remove bugs and nits.  Either rinse the comb with water and wash everything down the drain between sections or use paper towels to clean the comb and then seal the paper towels in a ziploc bag.  Remove all bed linens and replace with clean ones.  All bed linens and clothes must be washed in hot water (at least 130 degrees or hotter and dried in dryer with hottest setting for at least 30-45 minutes.  Use bleach on anything that will allow it.  Put all pillows in the dryer for at least 30-45 minutes (every day for the next two weeks).  Soak all brushes and combs in alcohol when not in use (for the next two weeks or longer).  Vacuum your entire house, matresses and furniture and remove the vacuum cleaner bag, seal it in a ziploc bag if possible and dispose of it in the outside trash can.  Comb through hair daily with lice comb to make sure you get out all of the nits, and retreat after a week.  Additionally, they have a devise called a "Robi-Comb" which you can use in between treatments and periodically to make sure they don't ever come back.\n\nI know it sounds like a lot to do, but that is what it takes to totally eradicate the little buggers.  They are relentless.  I wouldn't freak out too much.  It doesn't mean your child is dirty.  Quite the contrary.  The CDC in Atlanta stated that the cleanest children usually get it worse because the lice need clean, dry hair to attach the eggs (nits) to.  I wouldn't worry too much, it is quite a common problem with youngsters.\n\nGood Luck!
764943
the oldest i have is a couple of teesside ones from the 50's I'm afraid! if you need any from the past 2 decades i have hundreds!