One just cannot avoid trampling ants when walking

https://en.wikipedia.org/wiki/Ahimsa_in_Jainism#Ascetic_practices_for_adherence_to_Ahimsa

Jain ascetics sweep the ground before them to avoid injuring the most minuscule forms of life. They generally brush the ground clear of insects before they tread. Digambara monks do not wear any clothes and eat food only when it is not prepared for themselves. Ascetics of the Śvētāmbara tradition wear a small mask to avoid taking in tiny insects.

Apparently, some already try since quite some time now