Aleta and all,
I was going to ask you about the Permethrin as I knew that Sawyer's tick spray is not available in Canada. Alternatively, I have been using a product called "OnGuard Pro-Perm Insect Killer 3.78L, Bed Bug Spray, Fast Action, Residual (24/7), Non-Flammable, Water-Based Solution, Indoor and Outdoor Use" available from Amazon. I use it to spray my outdoor work clothes, and to make anti-tick bandanas for my dogs, and spray the covers of their dog beds. It is a weaker concentration that the Sawyer's spray for clothes. Sawyer's is .5 percent Pemethrin, and On-Guard is 0.25%. I recently noticed that Canadian Tire is selling a Permethrin product called Dokter Doom Tick Killer Plus for yards and buildings. It is also weaker at 0.25%.
Anyhow, I have been using that as mentioned above and it does seem to work. I apply it a couple of times rather than just once -- I spray everything outside on a warm, dry day.
Regarding the tick tubes, I have never made them, but planned to do some this week using the On-Guard permethrin. This is anecdotal info, but a couple of weeks ago, my vet was telling me that she has a client who has been making tick tubes for a couple of years and keeping track of ticks around their place. They say that the tick numbers have declined a lot since starting to do this. Anyhow, anything is worth a try.
On that note, I thought I would do some experimenting with cedar oil this year, and also with balsam fir oil as researchers at Dalhousie and Acadian Universities here in Nova Scotia discovered that balsam fir needles seem to kill ticks when the temperature is at or below freezing -- and it worked even better with balsam fir oil. I'm thinking that even if it didn't kill them, it might repel or disable them in some way, so I ordered the oils. They should arrive this week. I'll be doing some experimenting with them. Some of the cedar oil makers claim that a bit of cedar oil on dog collars will keep the ticks off - and same goes for clothing - and that you can spray it around your garden to keep ticks away. I'll be experimenting with all of this once I have some of these oils to work with.
bev