Aphid Update

Five days after spraying with the tomato leaf infusion and the aphids are still there. However, they have not moved and I suspect dead. No ants visible.

I'm using and old window cleaner bottle which does not have enough strength to wash the aphids off. Tried to buy a better one on the way up but no luck.

Only the leaf lettuce affected and it is a very healthy plant so I think the problem is under control.