Hair particles move for too long ( error: try using a key set?)

I’m messing around with hair particles, and I’ve been able to get it to look and behave the way I want it to, except for one thing: it keeps moving. I’m trying to set up a 2 second loop but the hair never stops moving.

I've tried to key frame the damping and clamping, but I get an error: Failed to resolve path to property, try manually specifying this using a Keying Set instead
Google didn’t really help me with figuring that out yet; the only key frames I have are on the object 's location.

Thanks to anyone who can help with this.