My cats are in heat. The signs are unmistakable. The are all scheduled to be spayed and the males are scheduled to be neutered at the same time. Our Vet. is considered the best in the area and it takes a while to get in to see him (except for emergency services). We have to book most appointments 3-4 months ahead. We only have these cats because they arrived 2 days before their Mama's scheduled appointment last summer and DH fell in love with them. I don't want any more kittens to arrive before their appointments. Anyway right now we have 4 young female cats in the house and will not let them out. They are well behaved, but 5 cats in the house is too many for me! Their appointment is 3 months away. I may consider taking them to a neuter scooter type service as it is less expensive and I can get them done sooner,but I am not real sure about the safety of these things. So for my questions: How long does their heat cycle last? I don't want to let them back outside too soon. How often will they go thru their heat cycle so that I can watch for it? Does anyone have experience with the neuter scooter type services? Thank you in advance.