When to tip...

La

Just curious when everyone tips?

I always tip at restaurants. Deliveries. Lawn/house services. Stuff like that.

My mother always made me run tips and drinks out to the guys cutting our grass, so I still do stuff like that when people come to my house now.

But today I had people install direct tv, and I wanted to tip but had no cash at all, so I feel pretty bad..

Do y'all tip when people do stuff around your house? Or only food services?