Suggestions for dealing with white flies in a vegetable garden?

So far they are just on the cucumbers, and I've removed the most infested section.  Any suggestions for getting rid of the rest and to safely keeping them from spreading?

Thanks

spray with Neem oil- 

Neem oil is a vegetable oil pressed from the fruits and seeds of the neem (Azadirachta indica), an evergreen tree which is endemic to the Indian subcontinent and has been introduced to many other areas in the tropics.

used for organic gardens

Dkaplan said:

spray with Neem oil- 

Neem oil is a vegetable oil pressed from the fruits and seeds of the neem (Azadirachta indica), an evergreen tree which is endemic to the Indian subcontinent and has been introduced to many other areas in the tropics.

used for organic gardens

Good immediate remedy.  Also the soil has to be treated as part of their reproductive cycle is to overwinter in the soil.  No clue what to use there but gardeners at Home Depot can probably help

Thank you both

I thought planting mums helped also.