If you want to get rid of flying squirrels, call the professionals. Otherwise, here are a couple of tips for the do it yourself people out there who wish to remove the flying squirrels from their attics themselves. The ways of doing so are similar to the removal of Gray Squirrels. Except that Flying Squirrels can have much greater numbers, so a funnel, or repeating trap is usually better than a single snap or cage trap. But the principles of mounting the trap, funnel or exclusion devise are still the same.
Although you must be sure all of the other potential entries are closed off. Flying squirrel removal is hard to do, because these animals are small and can go into a variety ofvery tiny holes, cracks, seams, vents and gaps. Sometimes you can't even find the flying squirrels entry points until you remove a peice of roofing, siding, or venting on the roof. This is where most people draw the line at do it yourself flying squirrel removal.
One must be comfortable enough on ladders and on a roof, (sometimes dangling off ropes) to be able to truly seal off any and all flying squirrel entry points. Even though flying squirrels can glide for long distances, 100 feet or more depending on the starting height, Gray Squirrels can also jump a fair distance.
The only way to successfully remove flying squirrels from your roof or attic is by trapping them and then removing them far away from your property. Although trapping one or two is not enough, you have to make sure you have removed all of the flying squirrels from your attic. Since a colony can harbour around 20 of these rodents, you can see that the trapping and removal process can be quite time consuming. In order to set traps effectively you will need to do some detective work to find the flying squirrels entry and exit routes, then block all of them except one, thus making the squirrels use the same route all the time. This is where the exclusion or funnel trap should be set.
In short, all of the flying squirrel potential holes must be checked. And I do mean every last one. Otherwise they will find it in due time. Seal everything with an exterior grade metal, since the flying squirrel chews through wood. Then leave only one opening. Thus, allowing them to leave, and never get back inside again. Or... call Bigfoot.