Flee beetle

This has surely been discussed before but can`t find any comment. I`m trying a garlic spray and wondered if others use this method. Would like a `recipe`for the solution or any other recommendation for preferably an organic solution.
(this is for eradication and not to encourage the blighters.)

If you make a 'crude' table tennis racket from stiff yellow card or plastic, cover it with a smear of grease and move it jently over the crop, the flea beetles jump when alarmed and stick to the grease.

No specific type of grease.   Cheers,   Tony.