Something I didn't realise:
But the species of ticks prevalent in those places are not associated with possible tick paralysis or potentially serious allergic reactions caused by Ixodes holocyclus. Australians need a different approach and there’s growing consensus that killing the tick in place may be best way to minimise the risk of severe allergic reactions.
Killing ticks
Killing ticks is tricky. Some insecticides may be effective but involving any substance (such as methylated spirits, nail polish, alcohol or petroleum jelly), or physical disturbance (such as the use of forceps) that agitates the tick is likely to cause it to inject more saliva and toxins into the skin, resulting in a more severe reaction.
The Australasian Society of Clinical Immunology and Allergy (ASCIA) recommends using aerosol “freezing” sprays normally associated with wart treatments. These products are widely available from pharmacies and they rapidly kill the tick in place, minimising potentially serious reactions.
Once killed, the tick can then be left to fall out naturally.
What we really need are clinical trials assessing the effectiveness of these currently recommended tick removal techniques and the likelihood of preventing or minimising allergic reactions. Fortunately, this is the focus of the recently formed Tick-induced Allergies Research and Awareness (TiARA) group.
I looked on the Allergy page they linked to in the article and it has this
Ether-containing aerosol sprays are currently recommended for killing the tick. Aerostart® and other similar products have been used extensively to kill ticks in allergic patients. It should be noted that these products are not registered for use in humans and contains benzene but there is long term experience with these products which have been shown to be very effective in treating those with serious tick allergies.
The use of other ether-containing sprays such as Wart-Off Freeze® (and similar e.g. Elastoplast Cold Spray®) has also been effective. These products will continue to be studied and advice updated as experience increases.
If available, liquid nitrogen applied by a doctor should also (in theory) be effective.