The "anti-tethering" bill that will limit the amount of time a canine can spend tied up will go into effect Jan. 1, 2007. Supporters of the bill say putting such limits into law might also convince owners it's just not right to tie up the dog. Opposition toward the bill, the governor's office, the California Farm Bureau, and hunters, has quelled since certain exemptions were made hunters will be allowed to tether their dogs overnight, agricultural workers can chain their canines for an unlimited period, and those who cannot afford to build a fence will be permitted to use an overhead trolley tether.