pour it on the ground outside, on God’s good clean earth, not on the pavement, or on your houseplants.
keep your fonts and bottles clean by soaking in a bleach solution (1T clorox to a half gallon of water) and letting them dry. if the rest of the font would be damaged by bleach, pour a bit of this solution in the bowl and let it sit.
add a pinch of salt to the water bottle and to the bowl when you fill it to avoid the green, scummy stuff. clean the font where you dip your fingers at least weekly.