I could see holes in the young leaves and mature too. Is there anything I can do ? I want to use only home made organic spray because of my young children like to play in the garden.

I use a spray bottle of three quarters water lots of garlic and dawn dish soap. make sure you spray after it rains. The leaves get washed off each time and you have to reaply. Spray as offen as necessary. Make sure you get all the leaves wet.

Will it every be a good place for gardening vegtables and fruit. I want to do organic gardening. How would I do this without contaiminating my crop? Small home consumpson only.

The people before me used pestisides I know because they left them in the garage. The house was built in 1952.

Please serious answers only. I know this can be done.

How do I protect new soil I import and new plants?
I did not write down what they were before I sent them to hazardous waste. I would imagine just weed killers and anything goes because they were old. It could have been things outlawed now.
Sorry about being rude about the serious answers part. I just am tired of getting rude answers. I will take answers that are suggestions.
I have been here for 5 years and have applied no chemicals. I do not need organic certification because this is for my own consumption. I just need to know it is safe.
I prefer to use marigolds to keep pests away or other natural methods.
It is nice to know the yard can recover. It is desert land, so It has not received much water, but I guess I could till it and water it and till and mix some good soil in and fertilize.

Has the garden space been not used for a long time? If so most of the pestisides have most likely all been washed away..If not you will have to till up very good and test the soil for what is in it.. they have very simple test to do at most garden stores. then add what is needed to your soil. and start it all over.. tilling and watering is the best way to build your soil back up to the best quality.
At peat moss and your compost and till in this fall and it will be ready for you new fresh garden for the following years. I don't use pestisides on my garden either.
My new garden for this year will need some work before next years planting too since it was tilled for the first time in 10 years this year.. need to get mine tilled atleast 8 to 10 inches deep this fall for better crops next year.. I will be spreading old chicken house straw on the garden this fall and tilling it in , in the spring time tilling.. I use rabbit poop for fertilizer you can use it all year long because it is one fresh poo that won't burn your plants.
do your soil test first and find out what you need for soil improvements.. then you should be fine.. You can always have fresh soil moved in..from somewhere else that is clean..