I think the litter fee idea would backfire. why? if someone cannot afford to neuter their pet then they cant afford to pay the litter fee, if they cant afford either then they would have to give up the dog, and all of a sudden we have a lot more homeless dogs. a better idea I think would be low cost spay neuter clinics all over the place not just 1 or 2 in select areas, I know here there is no such thing, so anyone who cannot afford it, wont.