I don't know of any specific dates. However, one great way to find out about the spay/neuter dates and much more, would be to go to their website which is SPCA. ORG. I am aware of a big event coming soon, "Clear the Shelter" on Saturday, August 18th. I just pulled up the SPCA event calendar and it shows there are low cost spay/neuter clinics at 8:00am on Saturday, August 11th and August 25th. Looking at the calendar it appears the low cost spay/neuter clinics are scheduled every two weeks.
Currently the only free spay/neuter program they have is for 23 zip codes in the south Dallas area, you can go to their website to see what zip codes are covered
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