Cold coffee and grounds? Any good for my house plants?

[BroccoliSpears]

I have a vague idea that you can put cold coffee and the coffee grounds on plants. Is this right? Shall I put it on my plants? Or straight in the compost?

I think I remember Monty Don (ahhh...sigh....) say that cold coffee grounds are a good slug repellent. Haven't tried it yet so can't tell you if it works I'm afraid, but was going to wait until spring when the little blighters come out of hiding ...

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The slug repellant works, but it isn't a repellant it actually causes neural damage and kills the beggars. It also decomposes into the soil. It's brown black so doesn't show up as bad as blue slug pellets. It doesn't poison the birds or other wildlife. If I don't have coffee grounds I have been know to water my Hosta's with cold instant coffee.