One really good way to get the ticks off your property would be to get as many people as possible to run around through the weeds "protected" by Skin so soft and or sulphur. They would leave with a lot of them attached to their bodies!
Seriously, we said it all TWICE before for people. Readers digest version: 1 oz of 13.3% and 15 oz water or 1.3 oz of 10% and 14.7 oz of water mixed well and added to one pair of rolled up jeans or two shirts or 2 pair of socks (coton is best cotton blend is ok) in a big (I use 1.5 and 2 gal) ZipLock bag. Don't drink it or put it on your skin. Let the clothes "wick" for a min of 2 hours, longer may be better. Remove using rubber gloves and AIR DRY (contains petroleum distillate and is not dryer safe). This lasts a year or 50 hot detergent washings.
Family has been tick free for two tick seasons so far. I have taken free range ticks and placed them on my clothes. they start out uphill at a good pace (normal behavior) then lose speed and sense of direction, wander erratically, and fall off. Just last Monday I was going through brush with a USDA guy in tow. I casually mentioned that I was glad to have my "tick clothes" on and he says, "Oh, look, you have two ticks on your leg!" Sure 'nuff they were wandering aimlessly and by the time I had described to the guy how to treat his clothes the ticks had fallen off. Needless to say, he was more than just a litle bit interested.
For ticks on our place. Permethrin spray does a good job but keep it away from ponds. Mow everything short, real short. Deport all the deer and white footed mice. The nymphs infest the mice and other small critters (people too if they get a chance). They hang out in ankle high grass and weeds. The adults are more commonly found at waist height. There are permethrim foggers to automatically treat your property. I would think guinneas to be much more ecologically sound and it is real tough to develop a resistance to being eaten.
Patrick