Los Angeles County, Los Angeles Rat Control Situation:
Hi David, I'm in southern California. I have at least one rat in my ceiling, maybe two or more. I've read your website and really appreciate the great insight you're providing. Based on your advice, I've caught 3 rats around the outside my house (over the last 2 months), trimmed trees back (3 days ago), and plugged all the access holes I could identify (3 weeks ago).
Yet I still have at least one rat in my attic. Though I've place several snap traps (baited with peanut butter and bird seed) in the attic, I get no nibbles. I also cannot find any evidence of their paths. I've moved the trap several time with no success. From inside the house, I hear them in sections of the attic (about 3:00 am) that are completely inaccessible to me (because of firewalls.)
So I hired a pest extermination company. For $275 they put some poison bait stations outside, and three snap traps in the attic that are baited with a beef jerkey substance. The traps are near the attic access panel - not near the rat noise activity. The guy's reply was that the scent would lure them. He also reviewed my hole-plugging and said it was fine. He didn't get onto my roof. It's been three days and I check the snap traps in the morning and around dusk each night.
My questions are:
1. Is it safe to assume that the rat(s) sleep in my house during the day and at night they are coming and going outside? Does this mean I've missed an access point?
2. Considering the inaccessibility, is it common to drill a hole in the ceiling (like a 4" hole for recessed lighting) to place traps in the attic for those inaccessible places? If I drill a hole, then I can stick a camera up there and take pictures to look for evidence, place the traps, monitor them, etc. But then I've got a hole to deal with.
3. Is it worth parking myself on the roof and patiently waiting to see where the rats are coming and going?
4. Have I given the beef jerkey snap-traps enough time to do their thing? Any other advice? Thanks for your help!
Los Angeles Rat Control Tip of The Week
How Likely Is It That A Rat In The Attic Will Have A Nest Of Babies?
Rats are among the most common pest animal species that people may have to deal with around the home, and because they are quite small they can often be quite elusive little animals to deal with as well. They are quite good climbers when it comes to moving around a domestic property, so if you are worried about rats, they won?t necessarily be around ground level. Because the attic or roof space of most domestic properties is rarely used, it can often be the dark quiet place where rats can get a foothold and build a nest without being noticed by the people living beneath.
Do Rats Have A Mating Season?
Like most wild animals, rats in the wild do have a mating season, where they will normally copulate and impregnate female rats in the spring, and then the female will then give birth a few weeks later, and can then have a few litters over the summer. However, the reason for the mating season is that in rural areas there are limited food sources available during the winter months, so it is impractical for rats to mate during these months. However, over recent decades, a growing number of rats are actually giving birth throughout the year because food sources are also present throughout the year, so whatever time of the year you discover rats in the attic, you may find there are babies there too.
How Often Will Rats Give Birth?
Because of how quickly rats can go from mating to giving birth to a litter of baby rats, a female rat can often be back and ready to mate again within a few weeks from giving birth. This means that in some cases female rats can give birth to up to ten litters a year, so the population of rats from one breeding female can increase very quickly. It is also worth noting that a baby female will actually become sexually mature herself after around six weeks from birth, so the possibility for a rat population to expand very quickly where there is sufficient food is certainly there.
Dealing With Rats In The Attic
When it comes to dealing with a rat infestation, the first step is to identify where in the attic the rats are active, and while taking the appropriate precautions, look for areas where there is a buildup of rat droppings. You should then place several rat traps in these areas of the attic, along with a small amount of food as bait, and the next step is simply to watch and wait. You should remove any rat carcasses as they are caught in your traps, and then re-lay the trap with a new serving of bait, and you should then continue this process until you no longer see any signs of fresh rat activity, and when you are no longer catching any more rats. You will then need to carry out the appropriate repairs.
What To Do With A Nest Of Baby Rats
In some cases you may actually find a nest of baby rats in the attic, and if they are very young they will often be unable to look after themselves, and will ultimately die if they have to live without the support and feeding from their mother. Because of how common they are, baby rats are rarely suitable to be looked after by a wildlife rehabilitator, so in this case the most humane thing that you can do will be to kill those baby rats as humanely as possible.
