"Vegans also use cruelty free cosmetics, and non-animal sourced clothes and other items, because of their opposition to animal exploitation for human convenience."
There are a few different types of Vegan.
Some don't want to eat animals, so don't, but may not follow a whole Vegan lifestyle.
I'm following a Vegan lifestyle, so I try to make all decisions taking my principles into account.
Like a pp, I would use tea tree, coconut and comb method.
I once posted how gardening is now a ongoing ethical nightmare, because were others see massive weeds on paving stones, I see a complete tiny ecosystem. I have a rat eating the bird's food, I often chase it with a brush, but then that is practising speciesism. Every time I have food that goes out of date (my children eat meat), really I should be putting it out for the rat.
Depending on what school of Buddhism you practise, it is ok to kill to stop the creature from causing more suffering so they have a chance to be reincarnated as something higher.