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What could the insect repellent DEET be diluted with? (spraying yourself from an original repellent bottle)
The reason for asking is I have two out of date bottles that I would like to refill @ 20%.
A bottle of 'ready to use' costs the same if I buy 20% or ~95%
The ingredients list deet(20%) and 'taste aversive agent'.
Could IPA or lab water be used to dilute the high strength 'over the counter UK' to create a 20%?
For short term use (<3 weeks in 52)
Also, can I dilute my cars petrol with 50% grey water and achieve a more efficient combustion?
Thanks in advance.