I noticed this pest on my cucumber leaves, what is the best pesticide for it

hi, Kingdeco053 thanks for contacting the Plantix community, from the photo it looks like flea beetles, please check our link and compare Alticinos  for more information and recommended treatments, cheers,

If you click on the green hyperlink that takes you to Plantix Library where everyone can find details on this problem and control measures. 🤠🌱

Hi Kingdeco053 agreed with Manejebem | Artur . It is yellow cucmber beetle.