Drop-on wormers for cats

Excellent idea, in theory. Gets round that whole 'A Cat is Basically a Tube' experience, which is never fun for anyone.

However, the instructions to prevent cat grooming self/other cat until the ungodly preparation is dry are easier read than obeyed, and I definitely didn't apply it far enough up Sumatra's neck: I think I got it just behind the shoulderblades rather than above them...

He has now been sick twice, and I'm rather hoping that an emergency vet trip will not be required.