World's Best and Swheat Scoop and safe to flush down the toilet. They will not clog your pipes and are made to flush. They are expensive, but they work very very well. I don't think I'll ever use anything else. It is def worth the cost. As far as flushing the litter goes, most everyone has already been exposed to toxoplasmosis. Most people however are immune. I can guarantee that almost everyone who has been around cats their whole lives already has it in their system. I didn't bother wearing gloves when changing litter when I was pregnant as I know I've already been exposed. It is already in our water, so flushing cat feces down the toilet isn't going to harm anything. There are tons of stray/outdoor cats who poop outdoors, so when it rains that infected water travels in our sewers etc. Every once in awhile we check blood for toxoplasmosis at work. It's interesting. Even with my Lupus, and having done chemo it hasn't affected me.

People who need to worry are those who have a slim chance of every being exposed to it. This includes vegetarians and vegans, and people who have never been around cats.

http://en.wikipedia.org/wiki/Toxoplasmosis
"Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii.[1] The parasite infects most genera of warm-blooded animals, including humans, but the primary host is the felid (cat) family. Animals are infected by eating infected meat, by ingestion of feces of a cat that has itself recently been infected, or by transmission from mother to fetus. Although cats are often blamed for spreading toxoplasmosis, contact with raw meat is a more significant source of human infections in many countries, and fecal contamination of hands is a greater risk factor.[2]"

"Transmission may occur through:

Ingestion of raw or partly cooked meat, especially pork, lamb, or venison containing Toxoplasma cysts. Infection prevalence in countries where undercooked meat is traditionally eaten has been related to this transmission method. Oocysts may also be ingested during hand-to-mouth contact after handling undercooked meat, or from using knives, utensils, or cutting boards contaminated by raw meat.[15]
Ingestion of contaminated cat feces. This can occur through hand-to-mouth contact following gardening, cleaning a cat's litter box, contact with children's sandpits, or touching leach, and can survive in the environment for over a year. It is, however, susceptible to high temperatures—above 66 degrees Celsius (150 degrees Fahrenheit), and is thus killed by thorough cooking, and would be killed by 24 hours in a typical domestic freezer.[16]"


From the CDC website http://www.cdc.gov/toxoplasmosis/
"Toxoplasmosis (Toxoplasma infection)

Washing vegetables thoroughly before eating them and cooking meat to recommended temperatures are just a few ways to reduce risk of toxoplasmosis. (Photo courtesy of USDA)
Toxoplasmosis is considered to be the third leading cause of death attributed to foodborne illness in the United States. More than 60 million men, women, and children in the U.S. carry the Toxoplasma parasite, but very few have symptoms because the immune system usually keeps the parasite from causing illness.

However, women newly infected with Toxoplasma during pregnancy and anyone with a compromised immune system should be aware that toxoplasmosis can have severe consequences for them."

http://www.cigna.com/healthinfo/tn7481.html