I wonder where non-speciesits turn into speciesists --- rats in their bedroom? Insects? Bacteria? Viruses? Prions? Fungi?
The line can be drawn somewhat arbitrarily. If I fight bacteria with antibiotics, why not fight mosquitoes? Or rats?
Change is hard, but if you're genuinely confused, simply follow what the great mindhacker Gautama Buddha taught: compassion for all and without judgement.