No. Rats and mice multiply. Depending on the species, a rat can have up to 6 litters per year with between 10 and 15 young. Mice can have over 10 litters per year with between 10 and 12 young. Once rats and mice reach sexual maturity they will mate with each other and have litters of their own.
If not removed rat babies can cause major damage to your home. Contact the pros at Zapp Wildlife Management!