Aphids are terrible this year. I didn't have aphids on my maters at all last year. I just used neem yesterday and the aphids are dead. Most are stuck to the leaves and have turned from bright green to black and brown. My mix was 2TBLS per gallon.

NEEM OIL sparay is safe because it is a natural oil derived from certain seeds.

I use neem (80%) in pump up sprayer = 2 TBS per gal every 2 weeks - fine mist top and bottom of leaf. It is safe and effective as insecticide and fungicide. I rate it the no. 1 organic product on the market. you can find more info on it if you google. Good Luck Bill

It's even used as a mouth wash for tooth and gum problems so I would think it is safe. It is a skin and eye irritant though.

If you use the neem seed fertilizer in your potting mix or as a top dressing in the pots- you don't get the aphid problem at all and also a lot of other insect pests too.

Neem seed fertilizer is available from several locations-darned good stuff too-no white flies, no aphids, and probably no red spiders, it can be used on almost everything,tomatoes peppers . Aubergines etc,

I treated the plants last night and this morning it's working... the tomatoes look clean. Maybe 90% of the critters are gone so I've resprayed. Neem rules for now...

I've made way too much of it and so can it be saved for later use- for days and weeks; and in line with mickyfinn's comment can the excess Neem solution be poured into the soil to benefit the plants?

It should be used right away. You should only make what you are going to use. Oh well. Store it in a dark cool place for 5 days and spray again, repeat. Constantly mixing while spraying. I've stored mix for 2 weeks and it still worked.