Both my wife and I have forgotten to pick up beer the last times we were in town. Our plan is to feed the slimy buggers beer.
feed your cucs epsom salts. Yes. Epsom salts. About a tablespoon or two per quart of water. Magnesium. They will like that. Especially while flowering. Worth a try. Keep the soil moist. Do your pots have drain holes? Water them until they start to drain. Fish fertilizer never hurts in normal amounts.., but magnesium sulphate (epsom salts) will help almost for sure at the flowering stage.
as for catching bugs, well you just catch them. In your hands, in a jar, whatever. Bumblebees and ladybugs are docile and slow-ish. Easy to catch.
so are garter snakes easy to catch. Easy-ish.