yes, you are correct, they can, and they are a major source of Ascaris in humans and they can pick up parasites just about anywhere. Dr Clark's program is good for humans>>>>But don't bother with the clark human parasite cleanse it doesn't taste good to cats and they won't eat it and clark's doesn't have the other herbs that soothe the stomach and support the body reaction to killing the parasites. use this one for pets: http://www.pets4homeopathy.com/remedies.html
(scroll down until you see PARASITES) there's another place that is selling it for only $6.50: http://www.ihealthtree.com/paralixer-2oz-king-bio-natural-medicines...
your cat may vomit the first day, but that will stop after the 2nd day. I gave it to all 13 of my cats and only one vomitted, he was the most parasitic one too. but that is normal for some cats with parasites to vomit. but the other 12 cats didn't vomit at all.
it's homeopathic/all herbs clear, odorless, tastelss, and you just put 4-6 drops per 2 cups of water (can put right in their water bowl and they will drink it no problem). do for 30 days and do 1x per year, 2x for multiple cat homes, and 3x for catteries (10+ cats).
use cat litter box liners and keep the box clean.
PET VET ZAPPER COLLAR: http://host14.ipowerweb.com/~stenulso/althealth/zapapet.htm
PARALIXER(HOMEOPATHIC HERBS): http://www.ihealthtree.com/paralixer-2oz-king-bio-natural-medicines... (CLEAR, ODORLESS, TASTELESS--USE 3-6 DROPS PER 2 CUPS OF WATER PUT RIGHT INTO PET'S BOWL (30 DAYS) THEN 1X PER WEEK FOR MAINTENANCE. No tricking or disappointment or wasting of products due to the cat smelling cloves or refusing Wormwood ! I'm using it now and NONE of my cats notice it at all, not even the picky ones.
Here's the ingredients: (The are all homeopathic/herbs - some of these herbs are their Latin names, I looked up each one up and Like "Tanacetum Vulgare" which is the same as the common herb names “Tansy, bitter button, cow bitter, golden button, mugwort.”
Calcarea Carbonica, Chenopodium Anthelminticum, Cina, Croton Tiglium, Filix Mas, Gambogia, Granatum, Lycopodium Clavatum, Mercurius Corrosivus, Natrum Phosphoricum, Santonium, Senna, Spigelia Anthelmia, Stannum Metallicum, Tanacetum Vulgare, Teucrium Marum, Zingiber Officinale - . Each ingredient is in equal volumes of 10x, 30x, and 100x potencies in a pure water base.
Most of them remove and kill parasites, but some help with the soothing of the stomach to assist in parasite elimination (some of the cats put on a parasite program will vomit the 1st day--due to the parasites dying) so the other herbs that assist in the mixture are very beneficial, which is another reason to use PARALIXER.
Of course, for humans, I only recommend THE ULTIMATE ZAPPER and the HUMAN PET PARASITE HERBS! People shouldn't share their bowls nor their zappers with pets anyway.