Founded in 1997, Adopt a River Cat (A.R.C.) is a no-kill organization based in the Fox Valley area that is dedicated to the spaying and neutering of stray cats and kittens. Many of these strays have been abandoned for so long that they have become feral. In other words, they have adopted an extreme distrust or fear of humans, and as such cannot properly be rehabilitated as household pets. These homeless cats tend to form colonies, where they interbreed and soon a population explosion occurs. The traditional reaction, or solution, to this problem has been to trap and kill the cats, but as it is a very costly method, it is only done in spurts, and as such, barely makes a dent in the population while opening new opportunities for colony growth.