You would do better to try to pick up some syringes at a medical supply store. There are some available online. Check out this website it maybe of service to you. www.eastcoastmedicalsupply.com
Another vote for pharmacy. Also, you might want to find a local holistic practitioner, and ask them where they get the needles for their B12 shots. They might be able to direct you to a place close to you.
I think to shoot pesticides into my body might make me feel a bit like a drug addict. I think I would much rather take the pesticides with food and or drink. I do not like the idea of needing to buy syringes.
What do you mean by "pesticides"? If peptides then no you can't take them orally. They will be destroyed by stomach acids before they get in bloodstream. It's like flushing your money down the toilet..
This may sound odd but since amazon no longer sells syringes with needles, I have been ordering them from Allivet.com It's the same type of syringes and needles that I used to buy on amazon and the prices are comparable or a bit better. Around $3.50 for 10 or $20 for 100. The place I order peptides does sell needles too but their prices have a huge markup.
Try to find an alternative, because Amazon peptide sellers have either ran out, or cancelled due to profit loss. Just search around for an alternative that is a fraction on par - look around on forums to get recommendations, such as this one.