Jen, I haven't had ringworm in here for quite a while (knock on wood), but found that Program for cats (liquid) double dosed into a syringe, and into their mouths, worked very well for me along with topical treatment. I squirted the Program into a square shape container and sucked it up into 3cc + syringes, scruffed the cats/kittens, and put it into their mouth. It took a few hours to get the right dose into the squirrely ones, but I did it without help. I have sprayers that I got at Walmart in the garden center that I put a mild bleach solution in, primed the pump, and sprayed everything the cats could have come in contact with. I think it was 1 part Clorox, to 32 parts water that is effective to kill the spores. Nothing was bleached to the point of having to throw out, but as a precaution I pitched the area rugs anyway (cheap enough to replace) and bleached down floors before getting new ones. Walls were sprayed, couch, etc. I had a major ringworm problem here for a few months, but somehow managed to get it out of the environment within a relatively short time...and not an easy task with probably 50 cats and kitten fosters, and keepers at the time! A carpet extraction machine does wonders as well! I LOVE the Hoover Steam Vacs (also available at Walmart...and worth every penny)! I have heard that shaving cats w/RW actually is NOT a good idea as it spreads the spores during the shaving process. I've used a drop of Clorox on a wet cotton ball to wipe down small lesions in an outward motion to coat the fur surrounding the spot as RW works it's way out in a circular fashion. Works great too, but not around eyes! I sure hope that you don't have an epidemic, but it can be overcome....I did it.