To a slow cooker add chicken, garlic, and hot sauce. Mix to coat, cover and cook on low for 8 hours (or high for 4 hours).
After cooking, keep the liquid in the slow cooker and remove chicken to a large bowl and shred.
Add the butter and ranch dressing mix to the liquid and stir to melt/combine.
Return shredded chicken to slow cooker. Stir to coat.
Cook for an additional 20-30 minutes to allow the chicken to absorb more flavor.
Serve and enjoy!