Now before I begin, you must learn to pronounce that term correctly..... the Wolfy way. You must squish up your face and say it. The pronounceation is "tsee-tsee" flies. When you say each syllable it must look and sound almost like a tiny sneeze. There. You got it! Okay. I have tsi-tsi flies all in my ferret room for the past month or so. They even stray elsewhere in the house now. At first they were annoying. But now they are worrisome to me. I scoop up poop several times a day so that there is none for them to swarm about, but it hasn't helped. My husband gutted out the room one weekend (it was already very clean), and it didn't help... they returned. So now we have those old fashioned fly strips in the room. Those help a lot. Do these tsi-tsi flies hurt anything? Can they hurt anything or the ferrets? Is there any way to get rid of them besides the fly strips? Yes, I realize that these are oridinary fruit flies, but I'm Wolfy and I have to have a Wolfy way of naming them. Wolfy Please visit: http://www.geocities.com/wolfysluv/ for information on ferret deafness: http://www.geocities.com/wolfysluv/deaf.html [Posted in FML issue 3917]