Squirrel Mange
Squirrels are susceptible to mange, a problem that causes itching and fur loss. Mange is caused by mites and is transmitted from squirrel to squirrel by physical contact or sharing a nest. Mange can result in loss of enough fur to leave the squirrel very
vulnerable in cold weather. Although fur loss is limited and temporary in most healthy squirrels, squirrels can die of exposure from extreme fur loss.Mange can be treated with Ivermectin, a drug used to treat parasitic infections such as intestinal worms and heartworm. Although it is possible to treat backyard squirrel populations by mixing Ivermectin in food put out for them, doing so is controversial. The larger the squirrel population in an area, the more likely it is that mange will spread through them. This can be seen as nature's way of keeping the population at optimal levels and culling the weakest squirrels from the gene pool. Another consideration is that treatment may be pointless anyway since mites in their nests will re-infect them.
If you want to treat your tribe of birdseed bandits, ask a veterinarian about the correct amount of medication to lace a tray of seed.
There is conflicting information as to whether mange can be transmitted from squirrels to other animals. There are two types of mange, sarcoptic and notoedric with notoedric being species specific to squirrels. Regardless, unless you have a squirrel as a pet, contact between your pets and squirrels is unlikely.