Is there a humane way to get rid of geckos?

i have to clean up gecko droppings along the walls of my home in thailand at least once a day. i have found these droppings in odd places as well. i would hate to hurt the little critters but i do not want them in my home. i could kill them with my broom because i can see them crawling around on the wall but i am hoping for a humane remedy.